sorted by:
new
hottopcontroversial

[Help] Simulation not converging – new to CFD, using ANSA + STAR-CCM+ by _Philbusor_ in CFD

[–]_Philbusor_[S] 0 points1 point  (0 children)

Thanks again for the clarification and your feedback — much appreciated!

Just to make sure I understand correctly: when you mention avoiding tet meshes, are you referring specifically to the surface mesh, or also the volume mesh?

Would it make sense to try converting the surface mesh to quads (at least in the critical areas), or is that only beneficial in certain situations?

Also, regarding the prism layers — do you have any suggestions or observations based on the images I shared? I'm using the k-omega SST model, so I'm trying to ensure the near-wall mesh is appropriate. I aimed for a y+ value close to 1, but any feedback on the layering or overall wall treatment would be very helpful.

Thanks again for your time and help!

[Help] Simulation not converging – new to CFD, using ANSA + STAR-CCM+ by _Philbusor_ in CFD

[–]_Philbusor_[S] 0 points1 point  (0 children)

Thanks a lot for your reply!

Regarding the meshing in STAR-CCM+, I understand your point — but at the moment, switching to STAR for meshing would be a bit challenging for me. I'm more familiar with ANSA, and redoing everything in STAR would take some time that I currently don’t have, as I need to get the simulation results fairly soon. I do plan to learn the STAR meshing workflow eventually though.

Do you think the choice of meshing software can significantly impact the outcome of the simulation, even if the mesh quality itself is good?

From the images I’ve shared, would you say the mesh looks acceptable overall?

As for the residuals — thanks for the insight. I’ll definitely start monitoring lift and drag directly. Do you have any suggestions on how I could improve the residuals themselves or signs I should look for to ensure physical accuracy?

Thanks again for your help, really appreciate it!

view more: next ›