Flow velocity of incompressible 3D-CFD cannot be converted.

[kominamiHIDEAKI]

Thank you for this wonderful software.
I'm Japanese and use translation software, so please excuse my strange English.

There is a problem when converting the results of 3D-CFD calculations with CalculiX.

There is no problem with compressible fluids, but with incompressible fluids, the flow velocity is not converted.

I used CaluculiX's standard post software(cgx) to confirm that the flow velocity(V3DF) is displayed correctly in the calculation results for incompressible fluids.
I used the editor to make sure that the result file(*.frd) contains the flow velocity variable(V3DF).

Could you confirm this behaviour on your side?

[imirzov]

Hi and thanks for posting the issue. Perfect English!
Please, attach your FRD file (if it's small enough) and tell, which element type have you been using?

[kominamiHIDEAKI]

http://www.dhondt.de/
Available downloads for the solver (CalculiX CrunchiX: ccx):

• test examples
  (http://www.dhondt.de/ccx_2.21.test.tar.bz2)

I pulled out something related to 3D-CFD from the archive-file above,
and modified so that node-value is output.

I ran them on Windows version.
(http://www.dhondt.de/calculix_2.21_4win.zip)

Element type is F3D8.

--- Contents in attach files ----

compressible
*coucylcentcomp
*coucylcomp

incompressible
*coucylcent
*coucylcent2

---

ccx2paraview_github_mail.tar.gz
ccx2paraview_github_mail.zip

[imirzov]

Ok, elements of type F3D8 are supported by the converter. Right now I have no installed Calculix and wouldn't like to run all tests, sorry. Would you post also converter's console output for your model? I need to see if it prints some error.

[kominamiHIDEAKI]

I will post converter's console output for my models.(movie)
And,I will post also vtk file, which is the result.
movie_mp4.tar.gz
movie_mp4.zip
VTK_File.tar.gz
VTK_File.zip

[imirzov]

Dear Hideaki Kominami,
I've looked through the files you've provided. Thank you for all of them.
I've converted all your models (2 compressible, 2 incompressible) with the actual converter's version and with an older one.
I can confirm the bug: V3DF is skipped while processing /incompressible/coucylcent and /incompressible/coucylcent2 jobs.