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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › How do I define a specific dynamic mesh size? › Reply To: How do I define a specific dynamic mesh size?

March 29, 2024 at 6:32 am
Gengyan Liu
Subscriber

I am using 22 v1, and I am using triangle. The simulation is axiosymmetric. I do not have inflation layers. Also, I have realized that after 1 iteration, it just says divergence in AMG solver. I have tried to lower the mesh density to around 20% of what is visible here, then it runs perfectly fine. I am using 5e-9 second time steps. I know that the wall does not have enough time to move more than 1 cell length, so no negative cell volume problem. Should I just update ansys to the 24 version? I am worried about backwards compatibility if something happens.Â