Cylinder in a Channel Benchmark

[TLWise]

I am modeling a cylinder in a rectangular channel fluid flow field. I am using the bias_y command on the mesh near the walls to capture the wall boundary layer velocities. How can I bias the mesh on both the upper and lower walls of the fluid flow domain?

[Mesh]
  [basic_mesh]
  type = GeneratedMeshGenerator
  dim = 2
  xmin = 0 # left is 3, inlet
  xmax = 2.2 # right is 1, outlet
  ymin = -0.2 # bottom is 0
  ymax = 0.21 # top is 2
  nx = 100
  ny = 15
  elem_type = QUAD4
  bias_x = 1.009
  bias_y = 1.09
  []
[]

[GiudGiud]

Hello

you can use multiple GeneratedMeshGenerators and use stitchedmeshgenerators to stitch them together

or use the cartesianMG and specify every region

Guillaume

[TLWise]

Sounds like a very complex methods in comparison to defining bias on a face. Thanks for the information.

[GiudGiud]

Is this a 2D or 3D mesh?
There's actually good biasing options for 3D for a cylinder