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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › KW SST model for simulation › Reply To: KW SST model for simulation

November 16, 2023 at 11:50 am
Aras karimi
Subscriber

Yes, the quality of the mesh is still maintained.

What is the meaning of this message?

I created 5 meshs to study the independence of the mesh solution. Time scale factor 1, which is the default of Fluent itself, was considered for all meshs. Only the first mesh, which had fewer cells, did not give this message, but meshs 2, 3, 4, and 5 give the message (stabilizing pressure coupled to enhance linear solver robustness).

When I reduce the time scale factor for meshs 2, 3, 4, and 5 to less than one, this message no longer appears. For example, I set the time scale factor to 0.7 for mesh 2 and no message appeared on the console. meshs 3, 4, and 5, which have more cells than mesh 2, required a time scale factor less than 0.7.

Is this behavior a normal behavior and for all problems with increasing the number of cells, the time scale factor should decrease?