Beginners task - 2D inviscid flow

Using SimScale Fluid Flow / CFD
1

Hey there
I’m a student and we use ANSYS at our school, but as a mac-user, I am not able to use this software. Luckily, i found SimScale. Even though it takes more time to simulate, it seems reasonable.
I wish to do the same exercises as my colleagues, however, it’s not that easy. The first exercise was to simulate inviscid 2-dimensional airflow around a cylinder. (very basic). But there doesn’t seem to exist a way to simulate 2D inviscid flow. Does anybody have an idea how to approximate that scenario? I tried very low dynamic viscosity numbers, i set the thickness of the flow volume to 2mm. (cylinder dimension: d=50mm).
Thanks for the advice!

2

@voellcar,

Thanks for posting on the forum and welcome to the SimScale Community :handshake:

We currently don’t have an option for simulating 2D flow directly - as you’ve pointed out. There’s a workflow to do that however by meshing a surface, extruding it and using the Empty 2D Boundary Condition.

It’s a bit of a cumbersome process but a way that consistently works would look like this:

  1. Mesh a geometry as a volume in SimScale
  2. Export the mesh to ParaView
  3. Generate a surface mesh from a face
  4. Extrude the surface mesh by a finite amount using the OpenFOAM mesher
  5. Import the mesh back to SimScale

Best,
Igor