From 7c75fd5b56bda61900796cabc011c3a00bde9555 Mon Sep 17 00:00:00 2001
From: Chenxi Zhao <chenxi.zhao@tum.de>
Date: Wed, 11 Sep 2024 08:55:35 +0200
Subject: [PATCH] change fluid and solid material properties

---
 .../T_pipe_VIPO_shell.cpp                     |  10 +-
 .../VelocityObserver_Velocity.xml             | 219 +++++++++---------
 ...VelocityObserver_Velocity_Run_0_result.xml |   4 +-
 ...VelocityObserver_Velocity_Run_1_result.xml |   4 +-
 ...VelocityObserver_Velocity_Run_2_result.xml |   4 +-
 ...VelocityObserver_Velocity_Run_3_result.xml |   4 +-
 ...VelocityObserver_Velocity_Run_4_result.xml |   4 +-
 ...VelocityObserver_Velocity_Run_5_result.xml |   4 +-
 .../VelocityObserver_Velocity_dtwdistance.xml |   2 +-
 .../VelocityObserver_Velocity_runtimes.dat    |   4 +-
 10 files changed, 129 insertions(+), 130 deletions(-)

diff --git a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/T_pipe_VIPO_shell.cpp b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/T_pipe_VIPO_shell.cpp
index c61b36bb08..ed80fe96b3 100644
--- a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/T_pipe_VIPO_shell.cpp
+++ b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/T_pipe_VIPO_shell.cpp
@@ -31,7 +31,7 @@ Real level_set_refinement_ratio = resolution_ref / (0.1 * BW);
 //	Global parameters on the fluid properties.
 //----------------------------------------------------------------------
 Real Outlet_pressure = 0;
-Real rho0_f = 1000.0;                                                 /**< Reference density of fluid. */
+Real rho0_f = 1.0;                                                 /**< Reference density of fluid. Using air density here.*/
 Real Re = 100.0;                                                      /**< Reynolds number. */
 Real U_f = 1.0;                                                       /**< Characteristic velocity. */
 Real mu_f = rho0_f * U_f * DH / Re;                                   /**< Dynamics viscosity. */
@@ -39,9 +39,9 @@ Real c_f = 10.0 * U_f * SMAX(Real(1), DH / (Real(2.0) * (DL - DL1))); /** Refere
 //----------------------------------------------------------------------
 //	Material parameters of the shell.
 //----------------------------------------------------------------------
-Real rho0_s = 1120;           /** Normalized density. */
-Real Youngs_modulus = 1.08e8; /** Normalized Youngs Modulus. */
-Real poisson = 0.49;          /** Poisson ratio. */
+Real rho0_s = 1.0e3;           /** Normalized density. */
+Real Youngs_modulus = 1.0e6; /** Normalized Youngs Modulus. */
+Real poisson = 0.3;          /** Poisson ratio. */
 //----------------------------------------------------------------------
 //	Define geometry of SPH bodies.
 //----------------------------------------------------------------------
@@ -521,4 +521,4 @@ int main(int ac, char *av[])
     }
 
     return 0;
-}
+}
\ No newline at end of file
diff --git a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity.xml b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity.xml
index 4fc041e307..e434bf39d1 100644
--- a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity.xml
+++ b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity.xml
@@ -1,113 +1,112 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <Velocity>
-    <Snapshot_0 Velocity_0="~[-2.32043e-08,-4.15925e-17]" />
-    <Snapshot_100 Velocity_0="~[0.0031782,-0.0135045]" />
-    <Snapshot_200 Velocity_0="~[0.0402275,-0.0424353]" />
-    <Snapshot_300 Velocity_0="~[0.081683,-0.0944316]" />
-    <Snapshot_400 Velocity_0="~[0.104439,-0.0929563]" />
-    <Snapshot_500 Velocity_0="~[0.212735,-0.0814568]" />
-    <Snapshot_600 Velocity_0="~[0.191958,-0.298625]" />
-    <Snapshot_700 Velocity_0="~[0.252965,-0.333507]" />
-    <Snapshot_800 Velocity_0="~[0.257762,-0.358379]" />
-    <Snapshot_900 Velocity_0="~[0.327762,-0.411954]" />
-    <Snapshot_1000 Velocity_0="~[0.280011,-0.524293]" />
-    <Snapshot_1100 Velocity_0="~[0.314379,-0.40616]" />
-    <Snapshot_1200 Velocity_0="~[0.208269,-0.759473]" />
-    <Snapshot_1300 Velocity_0="~[0.19548,-0.850964]" />
-    <Snapshot_1400 Velocity_0="~[0.314863,-0.650865]" />
-    <Snapshot_1500 Velocity_0="~[0.272101,-0.626887]" />
-    <Snapshot_1600 Velocity_0="~[0.407814,-0.45411]" />
-    <Snapshot_1700 Velocity_0="~[0.420228,-0.648068]" />
-    <Snapshot_1800 Velocity_0="~[0.476463,-0.583026]" />
-    <Snapshot_1900 Velocity_0="~[0.417086,-0.405228]" />
-    <Snapshot_2000 Velocity_0="~[0.256665,-0.57245]" />
-    <Snapshot_2100 Velocity_0="~[0.493088,-0.553451]" />
-    <Snapshot_2200 Velocity_0="~[0.327375,-0.512134]" />
-    <Snapshot_2300 Velocity_0="~[0.299559,-0.469497]" />
-    <Snapshot_2400 Velocity_0="~[0.405116,-0.712031]" />
-    <Snapshot_2500 Velocity_0="~[0.30695,-0.593231]" />
-    <Snapshot_2600 Velocity_0="~[0.398419,-0.540847]" />
-    <Snapshot_2700 Velocity_0="~[0.394792,-0.537884]" />
-    <Snapshot_2800 Velocity_0="~[0.316067,-0.58368]" />
-    <Snapshot_2900 Velocity_0="~[0.422151,-0.526531]" />
-    <Snapshot_3000 Velocity_0="~[0.484672,-0.515571]" />
-    <Snapshot_3100 Velocity_0="~[0.307123,-0.610321]" />
-    <Snapshot_3200 Velocity_0="~[0.321172,-0.600522]" />
-    <Snapshot_3300 Velocity_0="~[0.331041,-0.615958]" />
-    <Snapshot_3400 Velocity_0="~[0.35248,-0.565027]" />
-    <Snapshot_3500 Velocity_0="~[0.39994,-0.566625]" />
-    <Snapshot_3600 Velocity_0="~[0.343948,-0.533815]" />
-    <Snapshot_3700 Velocity_0="~[0.48608,-0.535269]" />
-    <Snapshot_3800 Velocity_0="~[0.337355,-0.615232]" />
-    <Snapshot_3900 Velocity_0="~[0.408763,-0.622732]" />
-    <Snapshot_4000 Velocity_0="~[0.451521,-0.526342]" />
-    <Snapshot_4100 Velocity_0="~[0.347938,-0.547187]" />
-    <Snapshot_4200 Velocity_0="~[0.333074,-0.646318]" />
-    <Snapshot_4300 Velocity_0="~[0.469833,-0.579356]" />
-    <Snapshot_4400 Velocity_0="~[0.514984,-0.583228]" />
-    <Snapshot_4500 Velocity_0="~[0.378956,-0.685597]" />
-    <Snapshot_4600 Velocity_0="~[0.445277,-0.590008]" />
-    <Snapshot_4700 Velocity_0="~[0.293392,-0.570813]" />
-    <Snapshot_4800 Velocity_0="~[0.412654,-0.355203]" />
-    <Snapshot_4900 Velocity_0="~[0.40484,-0.649548]" />
-    <Snapshot_5000 Velocity_0="~[0.305967,-0.469871]" />
-    <Snapshot_5100 Velocity_0="~[0.417836,-0.500913]" />
-    <Snapshot_5200 Velocity_0="~[0.328555,-0.579105]" />
-    <Snapshot_5300 Velocity_0="~[0.298206,-0.813429]" />
-    <Snapshot_5400 Velocity_0="~[0.489596,-0.388254]" />
-    <Snapshot_5500 Velocity_0="~[0.286775,-0.568086]" />
-    <Snapshot_5600 Velocity_0="~[0.345852,-0.672199]" />
-    <Snapshot_5700 Velocity_0="~[0.397195,-0.514244]" />
-    <Snapshot_5800 Velocity_0="~[0.274142,-0.551751]" />
-    <Snapshot_5900 Velocity_0="~[0.28354,-0.618924]" />
-    <Snapshot_6000 Velocity_0="~[0.436641,-0.508811]" />
-    <Snapshot_6100 Velocity_0="~[0.317042,-0.565049]" />
-    <Snapshot_6200 Velocity_0="~[0.337559,-0.590924]" />
-    <Snapshot_6300 Velocity_0="~[0.353434,-0.655476]" />
-    <Snapshot_6400 Velocity_0="~[0.472731,-0.517617]" />
-    <Snapshot_6500 Velocity_0="~[0.335557,-0.584884]" />
-    <Snapshot_6600 Velocity_0="~[0.315897,-0.634077]" />
-    <Snapshot_6700 Velocity_0="~[0.395732,-0.385384]" />
-    <Snapshot_6800 Velocity_0="~[0.534522,-0.678666]" />
-    <Snapshot_6900 Velocity_0="~[0.277421,-0.604479]" />
-    <Snapshot_7000 Velocity_0="~[0.380699,-0.591327]" />
-    <Snapshot_7100 Velocity_0="~[0.410969,-0.605396]" />
-    <Snapshot_7200 Velocity_0="~[0.435847,-0.579991]" />
-    <Snapshot_7300 Velocity_0="~[0.410501,-0.503384]" />
-    <Snapshot_7400 Velocity_0="~[0.485816,-0.358194]" />
-    <Snapshot_7500 Velocity_0="~[0.479636,-0.554862]" />
-    <Snapshot_7600 Velocity_0="~[0.407968,-0.615778]" />
-    <Snapshot_7700 Velocity_0="~[0.440826,-0.579876]" />
-    <Snapshot_7800 Velocity_0="~[0.390417,-0.637155]" />
-    <Snapshot_7900 Velocity_0="~[0.407487,-0.560633]" />
-    <Snapshot_8000 Velocity_0="~[0.286885,-0.591752]" />
-    <Snapshot_8100 Velocity_0="~[0.444278,-0.6021]" />
-    <Snapshot_8200 Velocity_0="~[0.290068,-0.572215]" />
-    <Snapshot_8300 Velocity_0="~[0.448793,-0.578843]" />
-    <Snapshot_8400 Velocity_0="~[0.408012,-0.671983]" />
-    <Snapshot_8500 Velocity_0="~[0.376166,-0.603296]" />
-    <Snapshot_8600 Velocity_0="~[0.257039,-0.830619]" />
-    <Snapshot_8700 Velocity_0="~[0.4215,-0.575056]" />
-    <Snapshot_8800 Velocity_0="~[0.416172,-0.585634]" />
-    <Snapshot_8900 Velocity_0="~[0.358973,-0.585282]" />
-    <Snapshot_9000 Velocity_0="~[0.269164,-0.862698]" />
-    <Snapshot_9100 Velocity_0="~[0.407092,-0.632949]" />
-    <Snapshot_9200 Velocity_0="~[0.270017,-0.565596]" />
-    <Snapshot_9300 Velocity_0="~[0.430216,-0.426265]" />
-    <Snapshot_9400 Velocity_0="~[0.35608,-0.597747]" />
-    <Snapshot_9500 Velocity_0="~[0.34537,-0.672836]" />
-    <Snapshot_9600 Velocity_0="~[0.289625,-0.583016]" />
-    <Snapshot_9700 Velocity_0="~[0.237076,-0.596955]" />
-    <Snapshot_9800 Velocity_0="~[0.314297,-0.562794]" />
-    <Snapshot_9900 Velocity_0="~[0.413629,-0.526141]" />
-    <Snapshot_10000 Velocity_0="~[0.451856,-0.538209]" />
-    <Snapshot_10100 Velocity_0="~[0.270369,-0.569563]" />
-    <Snapshot_10200 Velocity_0="~[0.421779,-0.639864]" />
-    <Snapshot_10300 Velocity_0="~[0.443827,-0.567934]" />
-    <Snapshot_10400 Velocity_0="~[0.262354,-0.550005]" />
-    <Snapshot_10500 Velocity_0="~[0.362322,-0.620282]" />
-    <Snapshot_10600 Velocity_0="~[0.388248,-0.66363]" />
-    <Snapshot_10700 Velocity_0="~[0.306083,-0.651707]" />
-    <Snapshot_10800 Velocity_0="~[0.400797,-0.566766]" />
-    <Snapshot_10900 Velocity_0="~[0.296056,-0.610142]" />
+    <Snapshot_0 Velocity_0="~[-2.30224e-08,-2.77727e-17]" />
+    <Snapshot_100 Velocity_0="~[0.0157108,-0.0145354]" />
+    <Snapshot_200 Velocity_0="~[0.0800778,-0.0444734]" />
+    <Snapshot_300 Velocity_0="~[0.161433,-0.11118]" />
+    <Snapshot_400 Velocity_0="~[0.23722,-0.204363]" />
+    <Snapshot_500 Velocity_0="~[0.36256,-0.251803]" />
+    <Snapshot_600 Velocity_0="~[0.405496,-0.376209]" />
+    <Snapshot_700 Velocity_0="~[0.511335,-0.45681]" />
+    <Snapshot_800 Velocity_0="~[0.65117,-0.503931]" />
+    <Snapshot_900 Velocity_0="~[0.723878,-0.513792]" />
+    <Snapshot_1000 Velocity_0="~[0.645846,-0.563813]" />
+    <Snapshot_1100 Velocity_0="~[0.696618,-0.568827]" />
+    <Snapshot_1200 Velocity_0="~[0.723719,-0.661452]" />
+    <Snapshot_1300 Velocity_0="~[0.838995,-0.40154]" />
+    <Snapshot_1400 Velocity_0="~[0.884947,-0.445374]" />
+    <Snapshot_1500 Velocity_0="~[0.903409,-0.407909]" />
+    <Snapshot_1600 Velocity_0="~[0.669029,-0.668735]" />
+    <Snapshot_1700 Velocity_0="~[0.881073,-0.478008]" />
+    <Snapshot_1800 Velocity_0="~[0.678306,-0.612414]" />
+    <Snapshot_1900 Velocity_0="~[0.91054,-0.422767]" />
+    <Snapshot_2000 Velocity_0="~[0.774241,-0.517829]" />
+    <Snapshot_2100 Velocity_0="~[0.716504,-0.681817]" />
+    <Snapshot_2200 Velocity_0="~[0.610471,-0.689505]" />
+    <Snapshot_2300 Velocity_0="~[0.697728,-0.623121]" />
+    <Snapshot_2400 Velocity_0="~[0.624889,-0.650384]" />
+    <Snapshot_2500 Velocity_0="~[0.864787,-0.528342]" />
+    <Snapshot_2600 Velocity_0="~[0.637708,-0.654729]" />
+    <Snapshot_2700 Velocity_0="~[0.888838,-0.396423]" />
+    <Snapshot_2800 Velocity_0="~[0.634742,-0.651657]" />
+    <Snapshot_2900 Velocity_0="~[0.814116,-0.545418]" />
+    <Snapshot_3000 Velocity_0="~[0.660069,-0.659002]" />
+    <Snapshot_3100 Velocity_0="~[0.766077,-0.551758]" />
+    <Snapshot_3200 Velocity_0="~[0.894325,-0.410449]" />
+    <Snapshot_3300 Velocity_0="~[0.862706,-0.469611]" />
+    <Snapshot_3400 Velocity_0="~[0.704217,-0.616154]" />
+    <Snapshot_3500 Velocity_0="~[0.848447,-0.506168]" />
+    <Snapshot_3600 Velocity_0="~[0.868085,-0.435006]" />
+    <Snapshot_3700 Velocity_0="~[0.86904,-0.482168]" />
+    <Snapshot_3800 Velocity_0="~[0.713495,-0.654473]" />
+    <Snapshot_3900 Velocity_0="~[0.850577,-0.456864]" />
+    <Snapshot_4000 Velocity_0="~[0.676009,-0.619772]" />
+    <Snapshot_4100 Velocity_0="~[0.8345,-0.476257]" />
+    <Snapshot_4200 Velocity_0="~[0.708843,-0.606341]" />
+    <Snapshot_4300 Velocity_0="~[0.881594,-0.465806]" />
+    <Snapshot_4400 Velocity_0="~[0.768936,-0.543143]" />
+    <Snapshot_4500 Velocity_0="~[0.709142,-0.602727]" />
+    <Snapshot_4600 Velocity_0="~[0.841918,-0.512221]" />
+    <Snapshot_4700 Velocity_0="~[0.855081,-0.475116]" />
+    <Snapshot_4800 Velocity_0="~[0.88614,-0.459254]" />
+    <Snapshot_4900 Velocity_0="~[0.629027,-0.637416]" />
+    <Snapshot_5000 Velocity_0="~[0.860212,-0.496421]" />
+    <Snapshot_5100 Velocity_0="~[0.662178,-0.667834]" />
+    <Snapshot_5200 Velocity_0="~[0.864965,-0.447682]" />
+    <Snapshot_5300 Velocity_0="~[0.667128,-0.621748]" />
+    <Snapshot_5400 Velocity_0="~[0.673998,-0.652084]" />
+    <Snapshot_5500 Velocity_0="~[0.712193,-0.667494]" />
+    <Snapshot_5600 Velocity_0="~[0.815435,-0.567116]" />
+    <Snapshot_5700 Velocity_0="~[0.696907,-0.612736]" />
+    <Snapshot_5800 Velocity_0="~[0.689781,-0.673502]" />
+    <Snapshot_5900 Velocity_0="~[0.885517,-0.424074]" />
+    <Snapshot_6000 Velocity_0="~[0.911346,-0.409748]" />
+    <Snapshot_6100 Velocity_0="~[0.654256,-0.628051]" />
+    <Snapshot_6200 Velocity_0="~[0.794011,-0.635814]" />
+    <Snapshot_6300 Velocity_0="~[0.771846,-0.573746]" />
+    <Snapshot_6400 Velocity_0="~[0.697075,-0.55933]" />
+    <Snapshot_6500 Velocity_0="~[0.870619,-0.484459]" />
+    <Snapshot_6600 Velocity_0="~[0.821016,-0.520593]" />
+    <Snapshot_6700 Velocity_0="~[0.767005,-0.551059]" />
+    <Snapshot_6800 Velocity_0="~[0.683607,-0.687948]" />
+    <Snapshot_6900 Velocity_0="~[0.822526,-0.457695]" />
+    <Snapshot_7000 Velocity_0="~[0.675539,-0.724322]" />
+    <Snapshot_7100 Velocity_0="~[0.729516,-0.588119]" />
+    <Snapshot_7200 Velocity_0="~[0.694671,-0.622034]" />
+    <Snapshot_7300 Velocity_0="~[0.892868,-0.442323]" />
+    <Snapshot_7400 Velocity_0="~[0.719401,-0.630813]" />
+    <Snapshot_7500 Velocity_0="~[0.869865,-0.522863]" />
+    <Snapshot_7600 Velocity_0="~[0.735275,-0.614091]" />
+    <Snapshot_7700 Velocity_0="~[0.919908,-0.401207]" />
+    <Snapshot_7800 Velocity_0="~[0.653671,-0.680264]" />
+    <Snapshot_7900 Velocity_0="~[0.903386,-0.403843]" />
+    <Snapshot_8000 Velocity_0="~[0.884327,-0.434782]" />
+    <Snapshot_8100 Velocity_0="~[0.890842,-0.428124]" />
+    <Snapshot_8200 Velocity_0="~[0.739376,-0.619204]" />
+    <Snapshot_8300 Velocity_0="~[0.772208,-0.569912]" />
+    <Snapshot_8400 Velocity_0="~[0.68325,-0.617734]" />
+    <Snapshot_8500 Velocity_0="~[0.84986,-0.495047]" />
+    <Snapshot_8600 Velocity_0="~[0.869138,-0.460459]" />
+    <Snapshot_8700 Velocity_0="~[0.721815,-0.57346]" />
+    <Snapshot_8800 Velocity_0="~[0.853335,-0.45512]" />
+    <Snapshot_8900 Velocity_0="~[0.769605,-0.59894]" />
+    <Snapshot_9000 Velocity_0="~[0.73204,-0.5471]" />
+    <Snapshot_9100 Velocity_0="~[0.716419,-0.659208]" />
+    <Snapshot_9200 Velocity_0="~[0.835155,-0.465386]" />
+    <Snapshot_9300 Velocity_0="~[0.698743,-0.575834]" />
+    <Snapshot_9400 Velocity_0="~[0.644306,-0.613631]" />
+    <Snapshot_9500 Velocity_0="~[0.710236,-0.657327]" />
+    <Snapshot_9600 Velocity_0="~[0.71245,-0.596109]" />
+    <Snapshot_9700 Velocity_0="~[0.714036,-0.606444]" />
+    <Snapshot_9800 Velocity_0="~[0.701822,-0.592678]" />
+    <Snapshot_9900 Velocity_0="~[0.728713,-0.613849]" />
+    <Snapshot_10000 Velocity_0="~[0.888596,-0.523821]" />
+    <Snapshot_10100 Velocity_0="~[0.693545,-0.66773]" />
+    <Snapshot_10200 Velocity_0="~[0.872222,-0.330429]" />
+    <Snapshot_10300 Velocity_0="~[0.68322,-0.648054]" />
+    <Snapshot_10400 Velocity_0="~[0.741488,-0.560039]" />
+    <Snapshot_10500 Velocity_0="~[0.672656,-0.637728]" />
+    <Snapshot_10600 Velocity_0="~[0.798883,-0.522367]" />
+    <Snapshot_10700 Velocity_0="~[0.662939,-0.626912]" />
+    <Snapshot_10800 Velocity_0="~[0.802411,-0.568341]" />
 </Velocity>
diff --git a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_0_result.xml b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_0_result.xml
index 7b752bca9b..f56ce8ba7c 100644
--- a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_0_result.xml
+++ b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_0_result.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <result>
     <Snapshot_Element>
-        <Snapshot number_of_snapshot_for_local_result_="110" />
+        <Snapshot number_of_snapshot_for_local_result_="109" />
     </Snapshot_Element>
     <Result_Element>
-        <Particle_0 snapshot_0="~[-2.32043e-08,1.50112e-16]" snapshot_1="~[0.0031782,-0.0135045]" snapshot_2="~[0.0402275,-0.0424354]" snapshot_3="~[0.0816829,-0.0944317]" snapshot_4="~[0.104449,-0.0929686]" snapshot_5="~[0.199885,-0.0854027]" snapshot_6="~[0.220768,-0.282864]" snapshot_7="~[0.329056,-0.341231]" snapshot_8="~[0.389503,-0.435413]" snapshot_9="~[0.282032,-0.442809]" snapshot_10="~[0.313534,-0.530234]" snapshot_11="~[0.239158,-0.453748]" snapshot_12="~[0.271497,-0.592405]" snapshot_13="~[0.339788,-0.582488]" snapshot_14="~[0.338335,-0.624832]" snapshot_15="~[0.405003,-0.518633]" snapshot_16="~[0.440735,-0.608884]" snapshot_17="~[0.373388,-0.666487]" snapshot_18="~[0.383883,-0.565249]" snapshot_19="~[0.306292,-0.598851]" snapshot_20="~[0.322605,-0.753364]" snapshot_21="~[0.392651,-0.545702]" snapshot_22="~[0.395228,-0.601692]" snapshot_23="~[0.329666,-0.444105]" snapshot_24="~[0.307729,-0.631115]" snapshot_25="~[0.458137,-0.705418]" snapshot_26="~[0.278744,-0.576485]" snapshot_27="~[0.395739,-0.428243]" snapshot_28="~[0.343554,-0.603625]" snapshot_29="~[0.3341,-0.404217]" snapshot_30="~[0.338021,-0.597124]" snapshot_31="~[0.413245,-0.501938]" snapshot_32="~[0.402305,-0.513472]" snapshot_33="~[0.325445,-0.622392]" snapshot_34="~[0.532359,-0.608611]" snapshot_35="~[0.312313,-0.590498]" snapshot_36="~[0.266745,-0.602431]" snapshot_37="~[0.379657,-0.619733]" snapshot_38="~[0.424066,-0.461296]" snapshot_39="~[0.303778,-0.574762]" snapshot_40="~[0.264916,-0.560617]" snapshot_41="~[0.370898,-0.551809]" snapshot_42="~[0.326874,-0.609397]" snapshot_43="~[0.429366,-0.461636]" snapshot_44="~[0.381669,-0.446713]" snapshot_45="~[0.268502,-0.568394]" snapshot_46="~[0.393744,-0.614323]" snapshot_47="~[0.33248,-0.616406]" snapshot_48="~[0.429484,-0.566152]" snapshot_49="~[0.284319,-0.449096]" snapshot_50="~[0.396739,-0.441992]" snapshot_51="~[0.379586,-0.587714]" snapshot_52="~[0.366599,-0.595104]" snapshot_53="~[0.338097,-0.444205]" snapshot_54="~[0.291239,-0.465462]" snapshot_55="~[0.393479,-0.542349]" snapshot_56="~[0.283028,-0.539044]" snapshot_57="~[0.387924,-0.575855]" snapshot_58="~[0.304699,-0.566099]" snapshot_59="~[0.290719,-0.573328]" snapshot_60="~[0.371707,-0.645642]" snapshot_61="~[0.438978,-0.482033]" snapshot_62="~[0.469357,-0.570285]" snapshot_63="~[0.358787,-0.607832]" snapshot_64="~[0.410915,-0.450799]" snapshot_65="~[0.424372,-0.533519]" snapshot_66="~[0.410889,-0.558955]" snapshot_67="~[0.453026,-0.572656]" snapshot_68="~[0.353043,-0.592641]" snapshot_69="~[0.387135,-0.430356]" snapshot_70="~[0.27935,-0.605779]" snapshot_71="~[0.28964,-0.580485]" snapshot_72="~[0.347329,-0.424116]" snapshot_73="~[0.369431,-0.58206]" snapshot_74="~[0.390074,-0.615153]" snapshot_75="~[0.459607,-0.642775]" snapshot_76="~[0.275075,-0.858789]" snapshot_77="~[0.348168,-0.571077]" snapshot_78="~[0.398749,-0.60435]" snapshot_79="~[0.363068,-0.595299]" snapshot_80="~[0.325704,-0.606819]" snapshot_81="~[0.305388,-0.610644]" snapshot_82="~[0.218815,-1.0724]" snapshot_83="~[0.384623,-0.480928]" snapshot_84="~[0.513478,-0.566136]" snapshot_85="~[0.379622,-0.586858]" snapshot_86="~[0.516703,-0.533513]" snapshot_87="~[0.418708,-0.656718]" snapshot_88="~[0.247705,-0.566281]" snapshot_89="~[0.381579,-0.462495]" snapshot_90="~[0.37226,-0.604012]" snapshot_91="~[0.283958,-0.59433]" snapshot_92="~[0.377407,-0.690613]" snapshot_93="~[0.400211,-0.541496]" snapshot_94="~[0.283496,-0.424871]" snapshot_95="~[0.487418,-0.668525]" snapshot_96="~[0.515916,-0.608085]" snapshot_97="~[0.14124,-0.886159]" snapshot_98="~[0.275695,-0.635757]" snapshot_99="~[0.363887,-0.594591]" snapshot_100="~[0.537496,-0.580591]" snapshot_101="~[0.301691,-0.583644]" snapshot_102="~[0.34193,-0.634938]" snapshot_103="~[0.483154,-0.559976]" snapshot_104="~[0.268757,-0.597638]" snapshot_105="~[0.372354,-0.600766]" snapshot_106="~[0.20316,-0.766309]" snapshot_107="~[0.406021,-0.47408]" snapshot_108="~[0.377628,-0.639628]" snapshot_109="~[0.278989,-0.563244]" />
+        <Particle_0 snapshot_0="~[-2.30224e-08,4.29965e-16]" snapshot_1="~[0.0157108,-0.0145354]" snapshot_2="~[0.0800259,-0.0444991]" snapshot_3="~[0.162204,-0.110613]" snapshot_4="~[0.249152,-0.202279]" snapshot_5="~[0.341673,-0.276393]" snapshot_6="~[0.437496,-0.375132]" snapshot_7="~[0.487236,-0.496945]" snapshot_8="~[0.669475,-0.458305]" snapshot_9="~[0.668135,-0.553866]" snapshot_10="~[0.633814,-0.645571]" snapshot_11="~[0.691969,-0.625882]" snapshot_12="~[0.847148,-0.454108]" snapshot_13="~[0.70516,-0.630033]" snapshot_14="~[0.921613,-0.363712]" snapshot_15="~[0.704808,-0.631503]" snapshot_16="~[0.8162,-0.503054]" snapshot_17="~[0.751438,-0.614247]" snapshot_18="~[0.738736,-0.625825]" snapshot_19="~[0.843415,-0.497909]" snapshot_20="~[0.726851,-0.66063]" snapshot_21="~[0.871983,-0.397475]" snapshot_22="~[0.864434,-0.435468]" snapshot_23="~[0.876662,-0.455953]" snapshot_24="~[0.876768,-0.404266]" snapshot_25="~[0.872673,-0.466072]" snapshot_26="~[0.696378,-0.630868]" snapshot_27="~[0.871556,-0.431856]" snapshot_28="~[0.688913,-0.590423]" snapshot_29="~[0.694849,-0.601101]" snapshot_30="~[0.698836,-0.63943]" snapshot_31="~[0.71299,-0.606933]" snapshot_32="~[0.773248,-0.571768]" snapshot_33="~[0.80204,-0.582316]" snapshot_34="~[0.730381,-0.648158]" snapshot_35="~[0.930746,-0.392813]" snapshot_36="~[0.722263,-0.614515]" snapshot_37="~[0.727492,-0.568774]" snapshot_38="~[0.714847,-0.638111]" snapshot_39="~[0.913807,-0.41921]" snapshot_40="~[0.636677,-0.645341]" snapshot_41="~[0.820811,-0.519093]" snapshot_42="~[0.910099,-0.491137]" snapshot_43="~[0.929744,-0.398478]" snapshot_44="~[0.715249,-0.636744]" snapshot_45="~[0.899214,-0.462132]" snapshot_46="~[0.779972,-0.568009]" snapshot_47="~[0.758186,-0.594733]" snapshot_48="~[0.854887,-0.498524]" snapshot_49="~[0.710771,-0.626421]" snapshot_50="~[0.907972,-0.437036]" snapshot_51="~[0.748613,-0.597783]" snapshot_52="~[0.751788,-0.607964]" snapshot_53="~[0.70376,-0.60226]" snapshot_54="~[0.907144,-0.414099]" snapshot_55="~[0.759545,-0.555415]" snapshot_56="~[0.861906,-0.544813]" snapshot_57="~[0.727826,-0.601106]" snapshot_58="~[0.87144,-0.517318]" snapshot_59="~[0.693216,-0.66272]" snapshot_60="~[0.858714,-0.464623]" snapshot_61="~[0.815204,-0.574973]" snapshot_62="~[0.658114,-0.627097]" snapshot_63="~[0.88886,-0.446972]" snapshot_64="~[0.8989,-0.451018]" snapshot_65="~[0.812255,-0.5064]" snapshot_66="~[0.847113,-0.545467]" snapshot_67="~[0.675696,-0.591571]" snapshot_68="~[0.799975,-0.5191]" snapshot_69="~[0.897773,-0.470991]" snapshot_70="~[0.779331,-0.513241]" snapshot_71="~[0.827131,-0.383727]" snapshot_72="~[0.877017,-0.460092]" snapshot_73="~[0.869708,-0.442843]" snapshot_74="~[0.714596,-0.636213]" snapshot_75="~[0.7182,-0.593877]" snapshot_76="~[0.886665,-0.489846]" snapshot_77="~[0.706416,-0.62927]" snapshot_78="~[0.917208,-0.445738]" snapshot_79="~[0.667665,-0.751574]" snapshot_80="~[0.765819,-0.599594]" snapshot_81="~[0.861067,-0.404465]" snapshot_82="~[0.854204,-0.433025]" snapshot_83="~[0.863099,-0.415124]" snapshot_84="~[0.866192,-0.357671]" snapshot_85="~[0.86283,-0.489109]" snapshot_86="~[0.874794,-0.433719]" snapshot_87="~[0.716065,-0.602603]" snapshot_88="~[0.758845,-0.601997]" snapshot_89="~[0.727365,-0.58711]" snapshot_90="~[0.678327,-0.692577]" snapshot_91="~[0.910959,-0.418618]" snapshot_92="~[0.849791,-0.409865]" snapshot_93="~[0.825696,-0.456546]" snapshot_94="~[0.846246,-0.469239]" snapshot_95="~[0.711102,-0.633397]" snapshot_96="~[0.783128,-0.575725]" snapshot_97="~[0.685071,-0.654818]" snapshot_98="~[0.76764,-0.589915]" snapshot_99="~[0.880311,-0.420137]" snapshot_100="~[0.870535,-0.387888]" snapshot_101="~[0.916614,-0.436702]" snapshot_102="~[0.689853,-0.678823]" snapshot_103="~[0.870554,-0.477556]" snapshot_104="~[0.829313,-0.449346]" snapshot_105="~[0.833073,-0.525077]" snapshot_106="~[0.772691,-0.53462]" snapshot_107="~[0.632049,-0.572709]" snapshot_108="~[0.692926,-0.643587]" />
     </Result_Element>
 </result>
diff --git a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_1_result.xml b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_1_result.xml
index 9a39685745..6b7b9cbc34 100644
--- a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_1_result.xml
+++ b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_1_result.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <result>
     <Snapshot_Element>
-        <Snapshot number_of_snapshot_for_local_result_="110" />
+        <Snapshot number_of_snapshot_for_local_result_="109" />
     </Snapshot_Element>
     <Result_Element>
-        <Particle_0 snapshot_0="~[-2.32043e-08,2.12606e-16]" snapshot_1="~[0.0031782,-0.0135045]" snapshot_2="~[0.0402275,-0.0424353]" snapshot_3="~[0.081683,-0.0944316]" snapshot_4="~[0.104136,-0.0932071]" snapshot_5="~[0.19103,-0.074162]" snapshot_6="~[0.226615,-0.311063]" snapshot_7="~[0.279923,-0.385256]" snapshot_8="~[0.238107,-0.413074]" snapshot_9="~[0.242457,-0.453992]" snapshot_10="~[0.141278,-0.812701]" snapshot_11="~[0.216952,-0.888652]" snapshot_12="~[0.318252,-0.584935]" snapshot_13="~[0.170815,-0.758773]" snapshot_14="~[0.30397,-0.597152]" snapshot_15="~[0.400729,-0.606833]" snapshot_16="~[0.423432,-0.67772]" snapshot_17="~[0.223518,-0.583941]" snapshot_18="~[0.377538,-0.377059]" snapshot_19="~[0.398152,-0.640643]" snapshot_20="~[0.375253,-0.597996]" snapshot_21="~[0.277637,-0.692463]" snapshot_22="~[0.155027,-0.790199]" snapshot_23="~[0.390561,-0.510361]" snapshot_24="~[0.423641,-0.499692]" snapshot_25="~[0.384161,-0.625872]" snapshot_26="~[0.379322,-0.709036]" snapshot_27="~[0.292377,-0.5959]" snapshot_28="~[0.267373,-0.560205]" snapshot_29="~[0.304702,-0.550491]" snapshot_30="~[0.30945,-0.602041]" snapshot_31="~[0.458639,-0.674943]" snapshot_32="~[0.471728,-0.459505]" snapshot_33="~[0.353588,-0.56701]" snapshot_34="~[0.357055,-0.554058]" snapshot_35="~[0.420894,-0.612981]" snapshot_36="~[0.337836,-0.50892]" snapshot_37="~[0.421934,-0.618574]" snapshot_38="~[0.513291,-0.624443]" snapshot_39="~[0.396354,-0.591915]" snapshot_40="~[0.321915,-0.631241]" snapshot_41="~[0.34016,-0.68084]" snapshot_42="~[0.465739,-0.489661]" snapshot_43="~[0.457933,-0.586967]" snapshot_44="~[0.430845,-0.66401]" snapshot_45="~[0.343518,-0.632247]" snapshot_46="~[0.323459,-0.60469]" snapshot_47="~[0.35231,-0.612208]" snapshot_48="~[0.426584,-0.626044]" snapshot_49="~[0.362291,-0.584887]" snapshot_50="~[0.362934,-0.605111]" snapshot_51="~[0.39768,-0.563859]" snapshot_52="~[0.441559,-0.413618]" snapshot_53="~[0.357965,-0.634234]" snapshot_54="~[0.364956,-0.592442]" snapshot_55="~[0.543842,-0.516767]" snapshot_56="~[0.433903,-0.581134]" snapshot_57="~[0.37455,-0.600674]" snapshot_58="~[0.428569,-0.558438]" snapshot_59="~[0.362665,-0.700883]" snapshot_60="~[0.443196,-0.6117]" snapshot_61="~[0.340699,-0.607261]" snapshot_62="~[0.309376,-0.578607]" snapshot_63="~[0.379139,-0.680197]" snapshot_64="~[0.378615,-0.508085]" snapshot_65="~[0.443664,-0.598618]" snapshot_66="~[0.406337,-0.378473]" snapshot_67="~[0.377329,-0.625718]" snapshot_68="~[0.38185,-0.503701]" snapshot_69="~[0.382978,-0.644939]" snapshot_70="~[0.457657,-0.412755]" snapshot_71="~[0.351291,-0.591936]" snapshot_72="~[0.345899,-0.552456]" snapshot_73="~[0.275076,-0.600975]" snapshot_74="~[0.337487,-0.631295]" snapshot_75="~[0.315289,-0.624928]" snapshot_76="~[0.264832,-0.579821]" snapshot_77="~[0.341394,-0.572613]" snapshot_78="~[0.333121,-0.614927]" snapshot_79="~[0.22562,-0.565354]" snapshot_80="~[0.313403,-0.655269]" snapshot_81="~[0.406208,-0.588862]" snapshot_82="~[0.331462,-0.571657]" snapshot_83="~[0.496402,-0.482005]" snapshot_84="~[0.253729,-0.811338]" snapshot_85="~[0.394749,-0.619021]" snapshot_86="~[0.353974,-0.62236]" snapshot_87="~[0.343481,-0.590085]" snapshot_88="~[0.582112,-0.642793]" snapshot_89="~[0.466093,-0.633155]" snapshot_90="~[0.323016,-0.587239]" snapshot_91="~[0.233364,-0.571418]" snapshot_92="~[0.408734,-0.719253]" snapshot_93="~[0.352092,-0.62675]" snapshot_94="~[0.346587,-0.512926]" snapshot_95="~[0.562434,-0.5304]" snapshot_96="~[0.556489,-0.591081]" snapshot_97="~[0.347746,-0.611695]" snapshot_98="~[0.328947,-0.610887]" snapshot_99="~[0.220715,-0.45486]" snapshot_100="~[0.413583,-0.601805]" snapshot_101="~[0.353513,-0.451523]" snapshot_102="~[0.420152,-0.452873]" snapshot_103="~[0.386444,-0.437112]" snapshot_104="~[0.354354,-0.61431]" snapshot_105="~[0.34031,-0.591517]" snapshot_106="~[0.329055,-0.625626]" snapshot_107="~[0.314495,-0.608359]" snapshot_108="~[0.498,-0.601965]" snapshot_109="~[0.374541,-0.579484]" />
+        <Particle_0 snapshot_0="~[-2.30224e-08,-2.60931e-16]" snapshot_1="~[0.0157108,-0.0145354]" snapshot_2="~[0.0800259,-0.0444991]" snapshot_3="~[0.161433,-0.11118]" snapshot_4="~[0.249759,-0.210191]" snapshot_5="~[0.365014,-0.274306]" snapshot_6="~[0.388326,-0.372343]" snapshot_7="~[0.504818,-0.47853]" snapshot_8="~[0.653964,-0.47214]" snapshot_9="~[0.632347,-0.549817]" snapshot_10="~[0.715749,-0.531661]" snapshot_11="~[0.662603,-0.614976]" snapshot_12="~[0.64201,-0.668013]" snapshot_13="~[0.652081,-0.606029]" snapshot_14="~[0.778511,-0.566925]" snapshot_15="~[0.876437,-0.443598]" snapshot_16="~[0.669523,-0.705978]" snapshot_17="~[0.707524,-0.623417]" snapshot_18="~[0.876549,-0.386884]" snapshot_19="~[0.839701,-0.518002]" snapshot_20="~[0.767949,-0.554313]" snapshot_21="~[0.942588,-0.325085]" snapshot_22="~[0.803627,-0.476951]" snapshot_23="~[0.852458,-0.457531]" snapshot_24="~[0.745319,-0.638201]" snapshot_25="~[0.687012,-0.61457]" snapshot_26="~[0.730607,-0.617085]" snapshot_27="~[0.90068,-0.496754]" snapshot_28="~[0.853787,-0.385621]" snapshot_29="~[0.896755,-0.414965]" snapshot_30="~[0.866756,-0.442701]" snapshot_31="~[0.773316,-0.523322]" snapshot_32="~[0.744945,-0.498057]" snapshot_33="~[0.732758,-0.680412]" snapshot_34="~[0.796464,-0.536477]" snapshot_35="~[0.749065,-0.652418]" snapshot_36="~[0.840809,-0.383543]" snapshot_37="~[0.856457,-0.462035]" snapshot_38="~[0.858005,-0.467959]" snapshot_39="~[0.717516,-0.606461]" snapshot_40="~[0.802928,-0.510332]" snapshot_41="~[0.901659,-0.443935]" snapshot_42="~[0.662171,-0.584382]" snapshot_43="~[0.680014,-0.609037]" snapshot_44="~[0.83322,-0.433551]" snapshot_45="~[0.688131,-0.658598]" snapshot_46="~[0.897264,-0.3826]" snapshot_47="~[0.69793,-0.638238]" snapshot_48="~[0.870194,-0.507722]" snapshot_49="~[0.67701,-0.595297]" snapshot_50="~[0.897288,-0.420105]" snapshot_51="~[0.688133,-0.603676]" snapshot_52="~[0.779537,-0.643638]" snapshot_53="~[0.692448,-0.619173]" snapshot_54="~[0.792484,-0.495019]" snapshot_55="~[0.670506,-0.622825]" snapshot_56="~[0.914936,-0.386776]" snapshot_57="~[0.821349,-0.483567]" snapshot_58="~[0.729143,-0.611976]" snapshot_59="~[0.853537,-0.451054]" snapshot_60="~[0.738087,-0.588717]" snapshot_61="~[0.854602,-0.477325]" snapshot_62="~[0.72876,-0.688781]" snapshot_63="~[0.895903,-0.451731]" snapshot_64="~[0.703507,-0.584902]" snapshot_65="~[0.737013,-0.607251]" snapshot_66="~[0.740679,-0.610931]" snapshot_67="~[0.658437,-0.657783]" snapshot_68="~[0.796725,-0.557167]" snapshot_69="~[0.887792,-0.49305]" snapshot_70="~[0.717039,-0.598966]" snapshot_71="~[0.754112,-0.587247]" snapshot_72="~[0.634855,-0.66314]" snapshot_73="~[0.743374,-0.650254]" snapshot_74="~[0.674502,-0.643269]" snapshot_75="~[0.915552,-0.445661]" snapshot_76="~[0.689324,-0.60294]" snapshot_77="~[0.805961,-0.500304]" snapshot_78="~[0.892305,-0.447024]" snapshot_79="~[0.892135,-0.490922]" snapshot_80="~[0.689993,-0.608106]" snapshot_81="~[0.832413,-0.502369]" snapshot_82="~[0.908792,-0.353683]" snapshot_83="~[0.724725,-0.677336]" snapshot_84="~[0.853651,-0.481245]" snapshot_85="~[0.744574,-0.594683]" snapshot_86="~[0.859433,-0.464212]" snapshot_87="~[0.640411,-0.603607]" snapshot_88="~[0.732882,-0.628435]" snapshot_89="~[0.723309,-0.584755]" snapshot_90="~[0.782882,-0.610207]" snapshot_91="~[0.714148,-0.561236]" snapshot_92="~[0.845935,-0.440953]" snapshot_93="~[0.704982,-0.666633]" snapshot_94="~[0.662626,-0.607003]" snapshot_95="~[0.744388,-0.592222]" snapshot_96="~[0.708582,-0.632998]" snapshot_97="~[0.667959,-0.629928]" snapshot_98="~[0.86605,-0.506501]" snapshot_99="~[0.67682,-0.669119]" snapshot_100="~[0.858571,-0.553416]" snapshot_101="~[0.709567,-0.60118]" snapshot_102="~[0.763929,-0.504665]" snapshot_103="~[0.666611,-0.64228]" snapshot_104="~[0.898511,-0.453464]" snapshot_105="~[0.905225,-0.473492]" snapshot_106="~[0.894641,-0.428171]" snapshot_107="~[0.726495,-0.63172]" snapshot_108="~[0.707771,-0.639339]" />
     </Result_Element>
 </result>
diff --git a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_2_result.xml b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_2_result.xml
index a9645d7812..7a4fe70a93 100644
--- a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_2_result.xml
+++ b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_2_result.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <result>
     <Snapshot_Element>
-        <Snapshot number_of_snapshot_for_local_result_="110" />
+        <Snapshot number_of_snapshot_for_local_result_="109" />
     </Snapshot_Element>
     <Result_Element>
-        <Particle_0 snapshot_0="~[-2.32043e-08,2.21602e-16]" snapshot_1="~[0.0031782,-0.0135045]" snapshot_2="~[0.0402275,-0.0424353]" snapshot_3="~[0.081683,-0.0944316]" snapshot_4="~[0.0917518,-0.109344]" snapshot_5="~[0.220733,-0.082589]" snapshot_6="~[0.211886,-0.309944]" snapshot_7="~[0.29969,-0.438826]" snapshot_8="~[0.350766,-0.454184]" snapshot_9="~[0.321685,-0.463472]" snapshot_10="~[0.269491,-0.534725]" snapshot_11="~[0.172529,-1.00331]" snapshot_12="~[0.350145,-0.360589]" snapshot_13="~[0.287911,-0.857035]" snapshot_14="~[0.335521,-0.587569]" snapshot_15="~[0.36817,-0.622531]" snapshot_16="~[0.411191,-0.634647]" snapshot_17="~[0.506693,-0.578152]" snapshot_18="~[0.384374,-0.650582]" snapshot_19="~[0.387788,-0.327827]" snapshot_20="~[0.429248,-0.455242]" snapshot_21="~[0.338308,-0.622237]" snapshot_22="~[0.540981,-0.633894]" snapshot_23="~[0.38767,-0.53259]" snapshot_24="~[0.275498,-0.643899]" snapshot_25="~[0.361157,-0.507995]" snapshot_26="~[0.353221,-0.748628]" snapshot_27="~[0.50038,-0.408148]" snapshot_28="~[0.290567,-0.638924]" snapshot_29="~[0.250651,-0.603538]" snapshot_30="~[0.520866,-0.723535]" snapshot_31="~[0.455681,-0.62478]" snapshot_32="~[0.356438,-0.586251]" snapshot_33="~[0.431144,-0.630418]" snapshot_34="~[0.318839,-0.626168]" snapshot_35="~[0.305011,-0.501168]" snapshot_36="~[0.374681,-0.677135]" snapshot_37="~[0.410035,-0.472302]" snapshot_38="~[0.28233,-0.473729]" snapshot_39="~[0.586616,-0.625614]" snapshot_40="~[0.367775,-0.557707]" snapshot_41="~[0.564868,-0.509402]" snapshot_42="~[0.404034,-0.493461]" snapshot_43="~[0.327722,-0.585141]" snapshot_44="~[0.262449,-0.559218]" snapshot_45="~[0.243496,-0.583355]" snapshot_46="~[0.342243,-0.610794]" snapshot_47="~[0.263153,-0.59607]" snapshot_48="~[0.327781,-0.565992]" snapshot_49="~[0.232186,-0.743942]" snapshot_50="~[0.376123,-0.611537]" snapshot_51="~[0.257115,-0.606956]" snapshot_52="~[0.484999,-0.523563]" snapshot_53="~[0.350317,-0.671505]" snapshot_54="~[0.318846,-0.558483]" snapshot_55="~[0.376634,-0.641029]" snapshot_56="~[0.514874,-0.608048]" snapshot_57="~[0.438458,-0.733663]" snapshot_58="~[0.453061,-0.451466]" snapshot_59="~[0.320669,-0.637856]" snapshot_60="~[0.375674,-0.586324]" snapshot_61="~[0.470133,-0.358273]" snapshot_62="~[0.365984,-0.43837]" snapshot_63="~[0.290224,-0.60033]" snapshot_64="~[0.306006,-0.70735]" snapshot_65="~[0.378435,-0.599783]" snapshot_66="~[0.345724,-0.570346]" snapshot_67="~[0.385794,-0.424763]" snapshot_68="~[0.30798,-0.612499]" snapshot_69="~[0.332438,-0.381382]" snapshot_70="~[0.324455,-0.594124]" snapshot_71="~[0.415128,-0.610506]" snapshot_72="~[0.51166,-0.543797]" snapshot_73="~[0.450321,-0.660619]" snapshot_74="~[0.479377,-0.606521]" snapshot_75="~[0.358272,-0.573453]" snapshot_76="~[0.24235,-0.60729]" snapshot_77="~[0.357497,-0.614013]" snapshot_78="~[0.448139,-0.479072]" snapshot_79="~[0.324526,-0.355933]" snapshot_80="~[0.287151,-0.595454]" snapshot_81="~[0.321702,-0.64035]" snapshot_82="~[0.325657,-0.574716]" snapshot_83="~[0.402479,-0.414157]" snapshot_84="~[0.238786,-0.618987]" snapshot_85="~[0.363469,-0.703931]" snapshot_86="~[0.455289,-0.494532]" snapshot_87="~[0.42634,-0.752139]" snapshot_88="~[0.350036,-0.554686]" snapshot_89="~[0.347815,-0.578573]" snapshot_90="~[0.437548,-0.43319]" snapshot_91="~[0.225825,-0.881403]" snapshot_92="~[0.358514,-0.584455]" snapshot_93="~[0.444393,-0.653844]" snapshot_94="~[0.397409,-0.725304]" snapshot_95="~[0.497246,-0.530995]" snapshot_96="~[0.439816,-0.663777]" snapshot_97="~[0.302818,-0.613486]" snapshot_98="~[0.469554,-0.679437]" snapshot_99="~[0.364768,-0.544023]" snapshot_100="~[0.35124,-0.387071]" snapshot_101="~[0.270946,-0.584329]" snapshot_102="~[0.434411,-0.460846]" snapshot_103="~[0.339448,-0.572034]" snapshot_104="~[0.433011,-0.623438]" snapshot_105="~[0.3102,-0.62165]" snapshot_106="~[0.544472,-0.490128]" snapshot_107="~[0.25515,-0.586506]" snapshot_108="~[0.278021,-0.567943]" snapshot_109="~[0.332893,-0.613698]" />
+        <Particle_0 snapshot_0="~[-2.30224e-08,-1.52226e-16]" snapshot_1="~[0.0157108,-0.0145354]" snapshot_2="~[0.0800259,-0.0444991]" snapshot_3="~[0.161433,-0.11118]" snapshot_4="~[0.234989,-0.212219]" snapshot_5="~[0.369721,-0.2402]" snapshot_6="~[0.400598,-0.395768]" snapshot_7="~[0.544159,-0.473038]" snapshot_8="~[0.598736,-0.497074]" snapshot_9="~[0.654129,-0.554433]" snapshot_10="~[0.651718,-0.605678]" snapshot_11="~[0.693197,-0.626931]" snapshot_12="~[0.765653,-0.527594]" snapshot_13="~[0.900047,-0.408783]" snapshot_14="~[0.75559,-0.631928]" snapshot_15="~[0.831667,-0.480206]" snapshot_16="~[0.882172,-0.426243]" snapshot_17="~[0.771713,-0.521947]" snapshot_18="~[0.784418,-0.481833]" snapshot_19="~[0.733144,-0.62242]" snapshot_20="~[0.676321,-0.678875]" snapshot_21="~[0.832036,-0.456239]" snapshot_22="~[0.841825,-0.465782]" snapshot_23="~[0.887736,-0.459694]" snapshot_24="~[0.709026,-0.68982]" snapshot_25="~[0.858555,-0.515778]" snapshot_26="~[0.679667,-0.656752]" snapshot_27="~[0.892493,-0.466069]" snapshot_28="~[0.851824,-0.479419]" snapshot_29="~[0.742251,-0.542606]" snapshot_30="~[0.697789,-0.61035]" snapshot_31="~[0.823197,-0.418794]" snapshot_32="~[0.706236,-0.656799]" snapshot_33="~[0.909216,-0.4741]" snapshot_34="~[0.661242,-0.678513]" snapshot_35="~[0.84928,-0.476955]" snapshot_36="~[0.711013,-0.598723]" snapshot_37="~[0.899793,-0.43477]" snapshot_38="~[0.734027,-0.624891]" snapshot_39="~[0.683157,-0.611697]" snapshot_40="~[0.679291,-0.577929]" snapshot_41="~[0.884709,-0.427009]" snapshot_42="~[0.817745,-0.496511]" snapshot_43="~[0.798595,-0.559948]" snapshot_44="~[0.812925,-0.488984]" snapshot_45="~[0.862255,-0.480381]" snapshot_46="~[0.880304,-0.488747]" snapshot_47="~[0.739677,-0.590523]" snapshot_48="~[0.634232,-0.670648]" snapshot_49="~[0.72596,-0.608366]" snapshot_50="~[0.911483,-0.40322]" snapshot_51="~[0.816882,-0.542505]" snapshot_52="~[0.668937,-0.661255]" snapshot_53="~[0.750212,-0.527027]" snapshot_54="~[0.673689,-0.641298]" snapshot_55="~[0.727722,-0.628192]" snapshot_56="~[0.726294,-0.633278]" snapshot_57="~[0.76676,-0.532532]" snapshot_58="~[0.917936,-0.397091]" snapshot_59="~[0.730938,-0.58785]" snapshot_60="~[0.850728,-0.44666]" snapshot_61="~[0.76556,-0.556866]" snapshot_62="~[0.651687,-0.670295]" snapshot_63="~[0.823797,-0.517452]" snapshot_64="~[0.890792,-0.466961]" snapshot_65="~[0.746244,-0.539695]" snapshot_66="~[0.651733,-0.683052]" snapshot_67="~[0.899106,-0.436168]" snapshot_68="~[0.902138,-0.44263]" snapshot_69="~[0.637521,-0.604066]" snapshot_70="~[0.939022,-0.419115]" snapshot_71="~[0.673674,-0.630785]" snapshot_72="~[0.808963,-0.568951]" snapshot_73="~[0.658189,-0.586384]" snapshot_74="~[0.677738,-0.630184]" snapshot_75="~[0.845059,-0.513124]" snapshot_76="~[0.861412,-0.476913]" snapshot_77="~[0.7199,-0.540323]" snapshot_78="~[0.767934,-0.579656]" snapshot_79="~[0.743015,-0.602099]" snapshot_80="~[0.853695,-0.421833]" snapshot_81="~[0.880007,-0.467923]" snapshot_82="~[0.689307,-0.637734]" snapshot_83="~[0.824302,-0.395209]" snapshot_84="~[0.695611,-0.648786]" snapshot_85="~[0.878906,-0.537257]" snapshot_86="~[0.87881,-0.452416]" snapshot_87="~[0.794342,-0.56763]" snapshot_88="~[0.708445,-0.720125]" snapshot_89="~[0.862176,-0.498738]" snapshot_90="~[0.706036,-0.596766]" snapshot_91="~[0.88651,-0.478821]" snapshot_92="~[0.698391,-0.587466]" snapshot_93="~[0.809305,-0.561133]" snapshot_94="~[0.784298,-0.535989]" snapshot_95="~[0.81131,-0.567264]" snapshot_96="~[0.704851,-0.664694]" snapshot_97="~[0.747582,-0.592011]" snapshot_98="~[0.918137,-0.399814]" snapshot_99="~[0.904431,-0.457992]" snapshot_100="~[0.892239,-0.465941]" snapshot_101="~[0.721752,-0.613082]" snapshot_102="~[0.708523,-0.630882]" snapshot_103="~[0.693503,-0.554621]" snapshot_104="~[0.668142,-0.682352]" snapshot_105="~[0.756547,-0.585032]" snapshot_106="~[0.717751,-0.62146]" snapshot_107="~[0.747335,-0.5225]" snapshot_108="~[0.910493,-0.434145]" />
     </Result_Element>
 </result>
diff --git a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_3_result.xml b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_3_result.xml
index b318dae463..efd750db34 100644
--- a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_3_result.xml
+++ b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_3_result.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <result>
     <Snapshot_Element>
-        <Snapshot number_of_snapshot_for_local_result_="110" />
+        <Snapshot number_of_snapshot_for_local_result_="109" />
     </Snapshot_Element>
     <Result_Element>
-        <Particle_0 snapshot_0="~[-2.32043e-08,4.13538e-16]" snapshot_1="~[0.0031782,-0.0135045]" snapshot_2="~[0.0402276,-0.0424353]" snapshot_3="~[0.081683,-0.0944316]" snapshot_4="~[0.104452,-0.0929306]" snapshot_5="~[0.220399,-0.0764482]" snapshot_6="~[0.214329,-0.291487]" snapshot_7="~[0.295893,-0.378073]" snapshot_8="~[0.261085,-0.422891]" snapshot_9="~[0.205109,-0.654978]" snapshot_10="~[0.155811,-0.833892]" snapshot_11="~[0.140874,-0.896542]" snapshot_12="~[0.335489,-0.545571]" snapshot_13="~[0.275297,-0.626385]" snapshot_14="~[0.270153,-0.607446]" snapshot_15="~[0.460446,-0.621561]" snapshot_16="~[0.308125,-0.608671]" snapshot_17="~[0.550047,-0.536818]" snapshot_18="~[0.316353,-0.450459]" snapshot_19="~[0.399827,-0.61565]" snapshot_20="~[0.412344,-0.625646]" snapshot_21="~[0.483227,-0.618473]" snapshot_22="~[0.390705,-0.596399]" snapshot_23="~[0.336366,-0.601531]" snapshot_24="~[0.329949,-0.608512]" snapshot_25="~[0.232135,-0.57629]" snapshot_26="~[0.406842,-0.545855]" snapshot_27="~[0.463647,-0.625704]" snapshot_28="~[0.428066,-0.700736]" snapshot_29="~[0.328749,-0.552797]" snapshot_30="~[0.315793,-0.607424]" snapshot_31="~[0.341594,-0.631617]" snapshot_32="~[0.392206,-0.594683]" snapshot_33="~[0.534462,-0.527206]" snapshot_34="~[0.299784,-0.614222]" snapshot_35="~[0.407388,-0.396973]" snapshot_36="~[0.289478,-0.61256]" snapshot_37="~[0.364953,-0.518328]" snapshot_38="~[0.419542,-0.583247]" snapshot_39="~[0.49728,-0.597519]" snapshot_40="~[0.288734,-0.615226]" snapshot_41="~[0.365973,-0.591028]" snapshot_42="~[0.570544,-0.512519]" snapshot_43="~[0.347748,-0.567701]" snapshot_44="~[0.54947,-0.621709]" snapshot_45="~[0.423434,-0.54517]" snapshot_46="~[0.41369,-0.567724]" snapshot_47="~[0.304093,-0.617473]" snapshot_48="~[0.39601,-0.638636]" snapshot_49="~[0.245687,-0.629582]" snapshot_50="~[0.192693,-0.91438]" snapshot_51="~[0.304271,-0.593049]" snapshot_52="~[0.389853,-0.624456]" snapshot_53="~[0.471045,-0.57937]" snapshot_54="~[0.316146,-0.845525]" snapshot_55="~[0.388829,-0.539908]" snapshot_56="~[0.340596,-0.556088]" snapshot_57="~[0.417127,-0.579837]" snapshot_58="~[0.331859,-0.607299]" snapshot_59="~[0.283182,-0.597011]" snapshot_60="~[0.357572,-0.605039]" snapshot_61="~[0.307431,-0.713128]" snapshot_62="~[0.473893,-0.635052]" snapshot_63="~[0.335311,-0.579388]" snapshot_64="~[0.432394,-0.469605]" snapshot_65="~[0.410138,-0.613914]" snapshot_66="~[0.447,-0.584156]" snapshot_67="~[0.462356,-0.617395]" snapshot_68="~[0.347035,-0.582959]" snapshot_69="~[0.287257,-0.583715]" snapshot_70="~[0.401377,-0.661339]" snapshot_71="~[0.411756,-0.643377]" snapshot_72="~[0.352874,-0.600859]" snapshot_73="~[0.342754,-0.581093]" snapshot_74="~[0.281799,-0.612637]" snapshot_75="~[0.304307,-0.630041]" snapshot_76="~[0.264384,-0.541549]" snapshot_77="~[0.326713,-0.535075]" snapshot_78="~[0.345592,-0.605939]" snapshot_79="~[0.352923,-0.560026]" snapshot_80="~[0.234363,-1.02871]" snapshot_81="~[0.374673,-0.484753]" snapshot_82="~[0.418708,-0.620936]" snapshot_83="~[0.322573,-0.564538]" snapshot_84="~[0.362421,-0.648471]" snapshot_85="~[0.308023,-0.618453]" snapshot_86="~[0.39204,-0.622152]" snapshot_87="~[0.405603,-0.636156]" snapshot_88="~[0.325794,-0.52515]" snapshot_89="~[0.331115,-0.60325]" snapshot_90="~[0.26778,-0.624586]" snapshot_91="~[0.311435,-0.602362]" snapshot_92="~[0.455725,-0.612783]" snapshot_93="~[0.360263,-0.593843]" snapshot_94="~[0.29589,-0.585069]" snapshot_95="~[0.367837,-0.56726]" snapshot_96="~[0.259832,-0.610598]" snapshot_97="~[0.254618,-0.529903]" snapshot_98="~[0.410808,-0.395053]" snapshot_99="~[0.29174,-0.60825]" snapshot_100="~[0.538658,-0.553683]" snapshot_101="~[0.341907,-0.629964]" snapshot_102="~[0.230247,-0.908017]" snapshot_103="~[0.457212,-0.518515]" snapshot_104="~[0.386094,-0.632834]" snapshot_105="~[0.363766,-0.586609]" snapshot_106="~[0.471769,-0.593793]" snapshot_107="~[0.332438,-0.829076]" snapshot_108="~[0.377753,-0.615206]" snapshot_109="~[0.461891,-0.575406]" />
+        <Particle_0 snapshot_0="~[-2.30224e-08,2.94353e-16]" snapshot_1="~[0.0157108,-0.0145354]" snapshot_2="~[0.0800661,-0.0444808]" snapshot_3="~[0.161433,-0.11118]" snapshot_4="~[0.240579,-0.220661]" snapshot_5="~[0.353294,-0.247844]" snapshot_6="~[0.428567,-0.382445]" snapshot_7="~[0.511976,-0.473774]" snapshot_8="~[0.505975,-0.488524]" snapshot_9="~[0.647998,-0.549953]" snapshot_10="~[0.650742,-0.639056]" snapshot_11="~[0.713728,-0.623255]" snapshot_12="~[0.680948,-0.628913]" snapshot_13="~[0.731303,-0.638666]" snapshot_14="~[0.868128,-0.450422]" snapshot_15="~[0.701457,-0.598652]" snapshot_16="~[0.750113,-0.569865]" snapshot_17="~[0.91874,-0.419141]" snapshot_18="~[0.649757,-0.66493]" snapshot_19="~[0.71527,-0.612208]" snapshot_20="~[0.660011,-0.704753]" snapshot_21="~[0.862031,-0.429862]" snapshot_22="~[0.64486,-0.606931]" snapshot_23="~[0.725987,-0.59004]" snapshot_24="~[0.654775,-0.754045]" snapshot_25="~[0.687071,-0.67573]" snapshot_26="~[0.777202,-0.467241]" snapshot_27="~[0.654033,-0.685928]" snapshot_28="~[0.824656,-0.484395]" snapshot_29="~[0.889284,-0.41803]" snapshot_30="~[0.7017,-0.62211]" snapshot_31="~[0.905039,-0.441686]" snapshot_32="~[0.845817,-0.463527]" snapshot_33="~[0.682531,-0.618317]" snapshot_34="~[0.736462,-0.548919]" snapshot_35="~[0.686983,-0.622639]" snapshot_36="~[0.860613,-0.432281]" snapshot_37="~[0.877647,-0.480812]" snapshot_38="~[0.747383,-0.642301]" snapshot_39="~[0.773027,-0.534776]" snapshot_40="~[0.840867,-0.415573]" snapshot_41="~[0.626675,-0.622817]" snapshot_42="~[0.884408,-0.421163]" snapshot_43="~[0.866928,-0.351412]" snapshot_44="~[0.652751,-0.647697]" snapshot_45="~[0.677837,-0.672812]" snapshot_46="~[0.724269,-0.603857]" snapshot_47="~[0.75072,-0.600542]" snapshot_48="~[0.897817,-0.383674]" snapshot_49="~[0.668439,-0.631005]" snapshot_50="~[0.871932,-0.470012]" snapshot_51="~[0.687915,-0.64907]" snapshot_52="~[0.89036,-0.41678]" snapshot_53="~[0.710765,-0.625372]" snapshot_54="~[0.729135,-0.591582]" snapshot_55="~[0.652693,-0.629289]" snapshot_56="~[0.726603,-0.626129]" snapshot_57="~[0.718963,-0.648979]" snapshot_58="~[0.737345,-0.636532]" snapshot_59="~[0.868188,-0.447298]" snapshot_60="~[0.730681,-0.620949]" snapshot_61="~[0.764806,-0.625496]" snapshot_62="~[0.642718,-0.606845]" snapshot_63="~[0.725904,-0.635948]" snapshot_64="~[0.877883,-0.4654]" snapshot_65="~[0.695087,-0.612526]" snapshot_66="~[0.825525,-0.464367]" snapshot_67="~[0.745328,-0.593051]" snapshot_68="~[0.741573,-0.632932]" snapshot_69="~[0.64231,-0.636377]" snapshot_70="~[0.681509,-0.614386]" snapshot_71="~[0.890354,-0.416978]" snapshot_72="~[0.765656,-0.572591]" snapshot_73="~[0.902221,-0.429545]" snapshot_74="~[0.65572,-0.655988]" snapshot_75="~[0.759938,-0.509749]" snapshot_76="~[0.804352,-0.501784]" snapshot_77="~[0.863802,-0.465019]" snapshot_78="~[0.895705,-0.46103]" snapshot_79="~[0.938652,-0.428007]" snapshot_80="~[0.882728,-0.427735]" snapshot_81="~[0.751648,-0.616996]" snapshot_82="~[0.69086,-0.645855]" snapshot_83="~[0.889498,-0.448899]" snapshot_84="~[0.76191,-0.579599]" snapshot_85="~[0.871394,-0.49127]" snapshot_86="~[0.682675,-0.610406]" snapshot_87="~[0.684104,-0.651997]" snapshot_88="~[0.873786,-0.458083]" snapshot_89="~[0.761698,-0.534232]" snapshot_90="~[0.668259,-0.640118]" snapshot_91="~[0.782552,-0.566508]" snapshot_92="~[0.772147,-0.58614]" snapshot_93="~[0.885378,-0.480118]" snapshot_94="~[0.694699,-0.584331]" snapshot_95="~[0.710618,-0.610485]" snapshot_96="~[0.811394,-0.497541]" snapshot_97="~[0.686381,-0.622775]" snapshot_98="~[0.833781,-0.487816]" snapshot_99="~[0.757892,-0.629105]" snapshot_100="~[0.74261,-0.573265]" snapshot_101="~[0.839203,-0.428332]" snapshot_102="~[0.846424,-0.462878]" snapshot_103="~[0.904614,-0.417881]" snapshot_104="~[0.669245,-0.632738]" snapshot_105="~[0.675534,-0.675296]" snapshot_106="~[0.866689,-0.540009]" snapshot_107="~[0.754224,-0.636735]" snapshot_108="~[0.68432,-0.695805]" />
     </Result_Element>
 </result>
diff --git a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_4_result.xml b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_4_result.xml
index 698ae12a0b..34429d6b70 100644
--- a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_4_result.xml
+++ b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_4_result.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <result>
     <Snapshot_Element>
-        <Snapshot number_of_snapshot_for_local_result_="110" />
+        <Snapshot number_of_snapshot_for_local_result_="109" />
     </Snapshot_Element>
     <Result_Element>
-        <Particle_0 snapshot_0="~[-2.32043e-08,5.41921e-16]" snapshot_1="~[0.0031782,-0.0135045]" snapshot_2="~[0.0402275,-0.0424353]" snapshot_3="~[0.0816829,-0.0944316]" snapshot_4="~[0.104452,-0.0929303]" snapshot_5="~[0.191516,-0.0739063]" snapshot_6="~[0.210026,-0.299525]" snapshot_7="~[0.219821,-0.299935]" snapshot_8="~[0.358063,-0.363489]" snapshot_9="~[0.350963,-0.443555]" snapshot_10="~[0.133131,-0.74368]" snapshot_11="~[0.159267,-0.760688]" snapshot_12="~[0.16168,-0.772699]" snapshot_13="~[0.314276,-0.533635]" snapshot_14="~[0.358755,-0.572105]" snapshot_15="~[0.344567,-0.498483]" snapshot_16="~[0.284675,-0.541837]" snapshot_17="~[0.329252,-0.612466]" snapshot_18="~[0.411239,-0.624807]" snapshot_19="~[0.303974,-0.581691]" snapshot_20="~[0.358468,-0.54688]" snapshot_21="~[0.326183,-0.61816]" snapshot_22="~[0.293382,-0.711467]" snapshot_23="~[0.327365,-0.843099]" snapshot_24="~[0.417384,-0.638437]" snapshot_25="~[0.288996,-0.249828]" snapshot_26="~[0.343688,-0.590393]" snapshot_27="~[0.379149,-0.527878]" snapshot_28="~[0.300046,-0.570875]" snapshot_29="~[0.25659,-0.55387]" snapshot_30="~[0.340996,-0.445978]" snapshot_31="~[0.476973,-0.617909]" snapshot_32="~[0.28603,-0.593632]" snapshot_33="~[0.330799,-0.628465]" snapshot_34="~[0.277426,-0.545234]" snapshot_35="~[0.287885,-0.572269]" snapshot_36="~[0.379808,-0.626437]" snapshot_37="~[0.447425,-0.614761]" snapshot_38="~[0.436668,-0.514692]" snapshot_39="~[0.297008,-0.592392]" snapshot_40="~[0.502438,-0.529119]" snapshot_41="~[0.409706,-0.671943]" snapshot_42="~[0.468355,-0.491266]" snapshot_43="~[0.206529,-0.971901]" snapshot_44="~[0.370932,-0.596947]" snapshot_45="~[0.36466,-0.531636]" snapshot_46="~[0.378558,-0.64196]" snapshot_47="~[0.324017,-0.56718]" snapshot_48="~[0.351242,-0.601661]" snapshot_49="~[0.387003,-0.590432]" snapshot_50="~[0.381037,-0.59219]" snapshot_51="~[0.454247,-0.543032]" snapshot_52="~[0.447841,-0.553485]" snapshot_53="~[0.315579,-0.615162]" snapshot_54="~[0.397203,-0.627128]" snapshot_55="~[0.501654,-0.420477]" snapshot_56="~[0.339925,-0.599025]" snapshot_57="~[0.305115,-0.558185]" snapshot_58="~[0.311199,-0.639336]" snapshot_59="~[0.252953,-0.839861]" snapshot_60="~[0.337464,-0.669619]" snapshot_61="~[0.394659,-0.624665]" snapshot_62="~[0.477565,-0.495247]" snapshot_63="~[0.342905,-0.591304]" snapshot_64="~[0.318012,-0.618731]" snapshot_65="~[0.523003,-0.499122]" snapshot_66="~[0.320368,-0.538031]" snapshot_67="~[0.4542,-0.517933]" snapshot_68="~[0.319393,-0.589156]" snapshot_69="~[0.391301,-0.572903]" snapshot_70="~[0.321677,-0.609196]" snapshot_71="~[0.384232,-0.628266]" snapshot_72="~[0.307617,-0.59063]" snapshot_73="~[0.381911,-0.556986]" snapshot_74="~[0.464944,-0.543516]" snapshot_75="~[0.338715,-0.606578]" snapshot_76="~[0.496908,-0.682939]" snapshot_77="~[0.387313,-0.608753]" snapshot_78="~[0.468727,-0.647626]" snapshot_79="~[0.262311,-0.830695]" snapshot_80="~[0.434354,-0.614627]" snapshot_81="~[0.546107,-0.494555]" snapshot_82="~[0.466683,-0.632466]" snapshot_83="~[0.317912,-0.607567]" snapshot_84="~[0.356813,-0.626335]" snapshot_85="~[0.284426,-0.541548]" snapshot_86="~[0.333148,-0.628439]" snapshot_87="~[0.45226,-0.507343]" snapshot_88="~[0.293842,-0.533877]" snapshot_89="~[0.402843,-0.569985]" snapshot_90="~[0.383274,-0.616992]" snapshot_91="~[0.493351,-0.558242]" snapshot_92="~[0.290991,-0.571973]" snapshot_93="~[0.190103,-0.70623]" snapshot_94="~[0.372004,-0.594046]" snapshot_95="~[0.328171,-0.563439]" snapshot_96="~[0.283261,-0.550576]" snapshot_97="~[0.300507,-0.62036]" snapshot_98="~[0.413234,-0.732016]" snapshot_99="~[0.331493,-0.706635]" snapshot_100="~[0.247208,-0.578511]" snapshot_101="~[0.305131,-0.550231]" snapshot_102="~[0.408721,-0.355639]" snapshot_103="~[0.328593,-0.640355]" snapshot_104="~[0.2898,-0.588506]" snapshot_105="~[0.30025,-0.584653]" snapshot_106="~[0.384048,-0.615326]" snapshot_107="~[0.446025,-0.494122]" snapshot_108="~[0.513937,-0.358446]" snapshot_109="~[0.405061,-0.626597]" />
+        <Particle_0 snapshot_0="~[-2.30224e-08,5.72871e-16]" snapshot_1="~[0.0157108,-0.0145354]" snapshot_2="~[0.0800661,-0.0444808]" snapshot_3="~[0.162204,-0.110613]" snapshot_4="~[0.246619,-0.216337]" snapshot_5="~[0.368548,-0.258352]" snapshot_6="~[0.40232,-0.422561]" snapshot_7="~[0.498763,-0.501794]" snapshot_8="~[0.584701,-0.516931]" snapshot_9="~[0.614983,-0.569163]" snapshot_10="~[0.664176,-0.624088]" snapshot_11="~[0.688668,-0.660362]" snapshot_12="~[0.660642,-0.670793]" snapshot_13="~[0.896549,-0.44781]" snapshot_14="~[0.629495,-0.739688]" snapshot_15="~[0.886133,-0.427637]" snapshot_16="~[0.862135,-0.574032]" snapshot_17="~[0.78437,-0.559244]" snapshot_18="~[0.727965,-0.574421]" snapshot_19="~[0.705964,-0.652273]" snapshot_20="~[0.891822,-0.422724]" snapshot_21="~[0.838382,-0.490788]" snapshot_22="~[0.778345,-0.489175]" snapshot_23="~[0.87569,-0.514731]" snapshot_24="~[0.762763,-0.639996]" snapshot_25="~[0.788513,-0.532554]" snapshot_26="~[0.701341,-0.655359]" snapshot_27="~[0.778935,-0.561586]" snapshot_28="~[0.852936,-0.488264]" snapshot_29="~[0.667673,-0.654153]" snapshot_30="~[0.902856,-0.434295]" snapshot_31="~[0.690069,-0.620994]" snapshot_32="~[0.707554,-0.646837]" snapshot_33="~[0.65315,-0.635265]" snapshot_34="~[0.918326,-0.461779]" snapshot_35="~[0.711008,-0.611886]" snapshot_36="~[0.74465,-0.587206]" snapshot_37="~[0.760384,-0.596472]" snapshot_38="~[0.648089,-0.680918]" snapshot_39="~[0.845562,-0.448995]" snapshot_40="~[0.824226,-0.571128]" snapshot_41="~[0.710998,-0.633321]" snapshot_42="~[0.874968,-0.453187]" snapshot_43="~[0.800738,-0.525034]" snapshot_44="~[0.720784,-0.652146]" snapshot_45="~[0.772542,-0.52614]" snapshot_46="~[0.923631,-0.404498]" snapshot_47="~[0.845761,-0.541254]" snapshot_48="~[0.750057,-0.638383]" snapshot_49="~[0.717298,-0.58912]" snapshot_50="~[0.667022,-0.646238]" snapshot_51="~[0.781071,-0.50854]" snapshot_52="~[0.919774,-0.398156]" snapshot_53="~[0.929183,-0.398385]" snapshot_54="~[0.776561,-0.540413]" snapshot_55="~[0.761725,-0.525471]" snapshot_56="~[0.698397,-0.660153]" snapshot_57="~[0.920376,-0.476779]" snapshot_58="~[0.721041,-0.64321]" snapshot_59="~[0.699506,-0.577873]" snapshot_60="~[0.693155,-0.609439]" snapshot_61="~[0.869334,-0.441208]" snapshot_62="~[0.863976,-0.408276]" snapshot_63="~[0.76979,-0.522393]" snapshot_64="~[0.70794,-0.555092]" snapshot_65="~[0.87077,-0.449048]" snapshot_66="~[0.80868,-0.53898]" snapshot_67="~[0.790216,-0.534921]" snapshot_68="~[0.745829,-0.614345]" snapshot_69="~[0.837491,-0.519131]" snapshot_70="~[0.882675,-0.431308]" snapshot_71="~[0.739197,-0.665829]" snapshot_72="~[0.758705,-0.567364]" snapshot_73="~[0.694938,-0.636387]" snapshot_74="~[0.791726,-0.542699]" snapshot_75="~[0.908274,-0.457118]" snapshot_76="~[0.697548,-0.660652]" snapshot_77="~[0.762274,-0.58618]" snapshot_78="~[0.9108,-0.400655]" snapshot_79="~[0.705663,-0.656946]" snapshot_80="~[0.921376,-0.399607]" snapshot_81="~[0.832342,-0.533908]" snapshot_82="~[0.869122,-0.404452]" snapshot_83="~[0.86863,-0.370266]" snapshot_84="~[0.906574,-0.406149]" snapshot_85="~[0.909787,-0.379854]" snapshot_86="~[0.854055,-0.495539]" snapshot_87="~[0.814196,-0.540584]" snapshot_88="~[0.918567,-0.396028]" snapshot_89="~[0.67843,-0.672703]" snapshot_90="~[0.910129,-0.439549]" snapshot_91="~[0.708232,-0.666716]" snapshot_92="~[0.763105,-0.5788]" snapshot_93="~[0.773441,-0.526077]" snapshot_94="~[0.727784,-0.644285]" snapshot_95="~[0.721338,-0.628101]" snapshot_96="~[0.849533,-0.503305]" snapshot_97="~[0.667515,-0.654854]" snapshot_98="~[0.883897,-0.45892]" snapshot_99="~[0.716683,-0.600859]" snapshot_100="~[0.796519,-0.54345]" snapshot_101="~[0.854206,-0.380417]" snapshot_102="~[0.723706,-0.629656]" snapshot_103="~[0.904948,-0.497404]" snapshot_104="~[0.764904,-0.474008]" snapshot_105="~[0.683983,-0.645607]" snapshot_106="~[0.70014,-0.659237]" snapshot_107="~[0.86552,-0.427015]" snapshot_108="~[0.727532,-0.638747]" />
     </Result_Element>
 </result>
diff --git a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_5_result.xml b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_5_result.xml
index e5ced1bcc2..7c35d7ca58 100644
--- a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_5_result.xml
+++ b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_Run_5_result.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <result>
     <Snapshot_Element>
-        <Snapshot number_of_snapshot_for_local_result_="110" />
+        <Snapshot number_of_snapshot_for_local_result_="109" />
     </Snapshot_Element>
     <Result_Element>
-        <Particle_0 snapshot_0="~[-2.32043e-08,-4.15925e-17]" snapshot_1="~[0.0031782,-0.0135045]" snapshot_2="~[0.0402275,-0.0424353]" snapshot_3="~[0.081683,-0.0944316]" snapshot_4="~[0.104439,-0.0929563]" snapshot_5="~[0.212735,-0.0814568]" snapshot_6="~[0.191958,-0.298625]" snapshot_7="~[0.252965,-0.333507]" snapshot_8="~[0.257762,-0.358379]" snapshot_9="~[0.327762,-0.411954]" snapshot_10="~[0.280011,-0.524293]" snapshot_11="~[0.314379,-0.40616]" snapshot_12="~[0.208269,-0.759473]" snapshot_13="~[0.19548,-0.850964]" snapshot_14="~[0.314863,-0.650865]" snapshot_15="~[0.272101,-0.626887]" snapshot_16="~[0.407814,-0.45411]" snapshot_17="~[0.420228,-0.648068]" snapshot_18="~[0.476463,-0.583026]" snapshot_19="~[0.417086,-0.405228]" snapshot_20="~[0.256665,-0.57245]" snapshot_21="~[0.493088,-0.553451]" snapshot_22="~[0.327375,-0.512134]" snapshot_23="~[0.299559,-0.469497]" snapshot_24="~[0.405116,-0.712031]" snapshot_25="~[0.30695,-0.593231]" snapshot_26="~[0.398419,-0.540847]" snapshot_27="~[0.394792,-0.537884]" snapshot_28="~[0.316067,-0.58368]" snapshot_29="~[0.422151,-0.526531]" snapshot_30="~[0.484672,-0.515571]" snapshot_31="~[0.307123,-0.610321]" snapshot_32="~[0.321172,-0.600522]" snapshot_33="~[0.331041,-0.615958]" snapshot_34="~[0.35248,-0.565027]" snapshot_35="~[0.39994,-0.566625]" snapshot_36="~[0.343948,-0.533815]" snapshot_37="~[0.48608,-0.535269]" snapshot_38="~[0.337355,-0.615232]" snapshot_39="~[0.408763,-0.622732]" snapshot_40="~[0.451521,-0.526342]" snapshot_41="~[0.347938,-0.547187]" snapshot_42="~[0.333074,-0.646318]" snapshot_43="~[0.469833,-0.579356]" snapshot_44="~[0.514984,-0.583228]" snapshot_45="~[0.378956,-0.685597]" snapshot_46="~[0.445277,-0.590008]" snapshot_47="~[0.293392,-0.570813]" snapshot_48="~[0.412654,-0.355203]" snapshot_49="~[0.40484,-0.649548]" snapshot_50="~[0.305967,-0.469871]" snapshot_51="~[0.417836,-0.500913]" snapshot_52="~[0.328555,-0.579105]" snapshot_53="~[0.298206,-0.813429]" snapshot_54="~[0.489596,-0.388254]" snapshot_55="~[0.286775,-0.568086]" snapshot_56="~[0.345852,-0.672199]" snapshot_57="~[0.397195,-0.514244]" snapshot_58="~[0.274142,-0.551751]" snapshot_59="~[0.28354,-0.618924]" snapshot_60="~[0.436641,-0.508811]" snapshot_61="~[0.317042,-0.565049]" snapshot_62="~[0.337559,-0.590924]" snapshot_63="~[0.353434,-0.655476]" snapshot_64="~[0.472731,-0.517617]" snapshot_65="~[0.335557,-0.584884]" snapshot_66="~[0.315897,-0.634077]" snapshot_67="~[0.395732,-0.385384]" snapshot_68="~[0.534522,-0.678666]" snapshot_69="~[0.277421,-0.604479]" snapshot_70="~[0.380699,-0.591327]" snapshot_71="~[0.410969,-0.605396]" snapshot_72="~[0.435847,-0.579991]" snapshot_73="~[0.410501,-0.503384]" snapshot_74="~[0.485816,-0.358194]" snapshot_75="~[0.479636,-0.554862]" snapshot_76="~[0.407968,-0.615778]" snapshot_77="~[0.440826,-0.579876]" snapshot_78="~[0.390417,-0.637155]" snapshot_79="~[0.407487,-0.560633]" snapshot_80="~[0.286885,-0.591752]" snapshot_81="~[0.444278,-0.6021]" snapshot_82="~[0.290068,-0.572215]" snapshot_83="~[0.448793,-0.578843]" snapshot_84="~[0.408012,-0.671983]" snapshot_85="~[0.376166,-0.603296]" snapshot_86="~[0.257039,-0.830619]" snapshot_87="~[0.4215,-0.575056]" snapshot_88="~[0.416172,-0.585634]" snapshot_89="~[0.358973,-0.585282]" snapshot_90="~[0.269164,-0.862698]" snapshot_91="~[0.407092,-0.632949]" snapshot_92="~[0.270017,-0.565596]" snapshot_93="~[0.430216,-0.426265]" snapshot_94="~[0.35608,-0.597747]" snapshot_95="~[0.34537,-0.672836]" snapshot_96="~[0.289625,-0.583016]" snapshot_97="~[0.237076,-0.596955]" snapshot_98="~[0.314297,-0.562794]" snapshot_99="~[0.413629,-0.526141]" snapshot_100="~[0.451856,-0.538209]" snapshot_101="~[0.270369,-0.569563]" snapshot_102="~[0.421779,-0.639864]" snapshot_103="~[0.443827,-0.567934]" snapshot_104="~[0.262354,-0.550005]" snapshot_105="~[0.362322,-0.620282]" snapshot_106="~[0.388248,-0.66363]" snapshot_107="~[0.306083,-0.651707]" snapshot_108="~[0.400797,-0.566766]" snapshot_109="~[0.296056,-0.610142]" />
+        <Particle_0 snapshot_0="~[-2.30224e-08,4.69809e-16]" snapshot_1="~[0.0157108,-0.0145354]" snapshot_2="~[0.0800661,-0.0444808]" snapshot_3="~[0.161433,-0.11118]" snapshot_4="~[0.229278,-0.205598]" snapshot_5="~[0.36938,-0.249055]" snapshot_6="~[0.412666,-0.411781]" snapshot_7="~[0.514677,-0.484541]" snapshot_8="~[0.557109,-0.552727]" snapshot_9="~[0.650006,-0.538435]" snapshot_10="~[0.616498,-0.578924]" snapshot_11="~[0.734093,-0.559528]" snapshot_12="~[0.717433,-0.624394]" snapshot_13="~[0.750066,-0.526469]" snapshot_14="~[0.857524,-0.407923]" snapshot_15="~[0.745317,-0.539284]" snapshot_16="~[0.766057,-0.604923]" snapshot_17="~[0.724958,-0.631758]" snapshot_18="~[0.733762,-0.637779]" snapshot_19="~[0.898414,-0.44356]" snapshot_20="~[0.748883,-0.641232]" snapshot_21="~[0.81566,-0.538674]" snapshot_22="~[0.828018,-0.427234]" snapshot_23="~[0.716576,-0.624043]" snapshot_24="~[0.893641,-0.492643]" snapshot_25="~[0.81861,-0.443529]" snapshot_26="~[0.743593,-0.544873]" snapshot_27="~[0.72559,-0.614707]" snapshot_28="~[0.892769,-0.43558]" snapshot_29="~[0.92587,-0.408373]" snapshot_30="~[0.876936,-0.379506]" snapshot_31="~[0.89803,-0.475202]" snapshot_32="~[0.754471,-0.504167]" snapshot_33="~[0.85916,-0.499216]" snapshot_34="~[0.807356,-0.561982]" snapshot_35="~[0.688115,-0.574824]" snapshot_36="~[0.787536,-0.509548]" snapshot_37="~[0.90567,-0.458381]" snapshot_38="~[0.71651,-0.558459]" snapshot_39="~[0.734107,-0.620419]" snapshot_40="~[0.711956,-0.674319]" snapshot_41="~[0.706774,-0.602019]" snapshot_42="~[0.730872,-0.563615]" snapshot_43="~[0.700695,-0.685741]" snapshot_44="~[0.8844,-0.525187]" snapshot_45="~[0.648037,-0.701228]" snapshot_46="~[0.910945,-0.450632]" snapshot_47="~[0.825048,-0.522827]" snapshot_48="~[0.852889,-0.482798]" snapshot_49="~[0.854086,-0.372551]" snapshot_50="~[0.637073,-0.63914]" snapshot_51="~[0.710765,-0.624139]" snapshot_52="~[0.8593,-0.420318]" snapshot_53="~[0.903626,-0.458456]" snapshot_54="~[0.87922,-0.520004]" snapshot_55="~[0.792111,-0.487519]" snapshot_56="~[0.677686,-0.618751]" snapshot_57="~[0.697292,-0.603451]" snapshot_58="~[0.781109,-0.423932]" snapshot_59="~[0.722275,-0.613701]" snapshot_60="~[0.712752,-0.607591]" snapshot_61="~[0.908569,-0.347329]" snapshot_62="~[0.701006,-0.698648]" snapshot_63="~[0.85197,-0.462924]" snapshot_64="~[0.713494,-0.645813]" snapshot_65="~[0.830546,-0.471562]" snapshot_66="~[0.709996,-0.589866]" snapshot_67="~[0.857072,-0.490747]" snapshot_68="~[0.712446,-0.59551]" snapshot_69="~[0.791341,-0.444225]" snapshot_70="~[0.735096,-0.64894]" snapshot_71="~[0.676188,-0.645477]" snapshot_72="~[0.692273,-0.63649]" snapshot_73="~[0.676266,-0.567862]" snapshot_74="~[0.86407,-0.396685]" snapshot_75="~[0.894123,-0.411591]" snapshot_76="~[0.876346,-0.507278]" snapshot_77="~[0.660065,-0.6197]" snapshot_78="~[0.882978,-0.49368]" snapshot_79="~[0.877804,-0.437832]" snapshot_80="~[0.79315,-0.526021]" snapshot_81="~[0.779317,-0.608143]" snapshot_82="~[0.896132,-0.427548]" snapshot_83="~[0.823576,-0.524379]" snapshot_84="~[0.822619,-0.552848]" snapshot_85="~[0.7151,-0.652284]" snapshot_86="~[0.75624,-0.529928]" snapshot_87="~[0.887151,-0.483769]" snapshot_88="~[0.868116,-0.403384]" snapshot_89="~[0.718519,-0.630052]" snapshot_90="~[0.846769,-0.407836]" snapshot_91="~[0.923843,-0.434094]" snapshot_92="~[0.890365,-0.505546]" snapshot_93="~[0.623419,-0.652837]" snapshot_94="~[0.67327,-0.667653]" snapshot_95="~[0.647174,-0.59002]" snapshot_96="~[0.875928,-0.467313]" snapshot_97="~[0.683906,-0.613524]" snapshot_98="~[0.660949,-0.645528]" snapshot_99="~[0.721228,-0.590145]" snapshot_100="~[0.769926,-0.553403]" snapshot_101="~[0.857828,-0.464751]" snapshot_102="~[0.809201,-0.520285]" snapshot_103="~[0.715496,-0.607355]" snapshot_104="~[0.700578,-0.666659]" snapshot_105="~[0.805734,-0.542889]" snapshot_106="~[0.84341,-0.528116]" snapshot_107="~[0.663218,-0.661821]" snapshot_108="~[0.878587,-0.465985]" />
     </Result_Element>
 </result>
diff --git a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_dtwdistance.xml b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_dtwdistance.xml
index 9d3e269835..893ea66ae0 100644
--- a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_dtwdistance.xml
+++ b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_dtwdistance.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <dtw_distance>
-    <DTWDistance Velocity_0="0.75053593995594003" />
+    <DTWDistance Velocity_0="0.79722394192243684" />
 </dtw_distance>
diff --git a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_runtimes.dat b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_runtimes.dat
index e5438f1b42..fb0f3ed4ea 100644
--- a/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_runtimes.dat
+++ b/tests/extra_source_and_tests/test_2d_T_pipe_VIPO_shell/regression_test_tool/VelocityObserver_Velocity_runtimes.dat
@@ -1,3 +1,3 @@
 false
-7
-1
\ No newline at end of file
+8
+2
\ No newline at end of file