{"id":315112,"date":"2023-11-06T18:47:27","date_gmt":"2023-11-06T18:47:27","guid":{"rendered":"\/forum\/forums\/topic\/kw-sst-model-for-simulation\/"},"modified":"2023-11-06T18:47:27","modified_gmt":"2023-11-06T18:47:27","slug":"kw-sst-model-for-simulation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/kw-sst-model-for-simulation\/","title":{"rendered":"KW SST model for simulation"},"content":{"rendered":"

Hi to all,<\/span><\/span><\/span><\/p>\n

I am working on a 3D airfoil. Currently, I am conducting an independent mesh study to evaluate the dependence of the simulation results. My mesh is structured. The solution is done in steady state. My turbulence model is  KW-SST<\/em>  with the following settings:<\/span><\/span><\/span><\/p>\n

 <\/p>\n

\"\"<\/span><\/span><\/span><\/p>\n

When I increase the number of grid cells to do the grid study, the message (stabilizing pressure coupled to enhance linear solver robustness) appears in the console and the residuals move hard and at a very slow speed. Is this a normal thing and does this problem always occur with the increase in the number of mesh cells?<\/span><\/span><\/span><\/p>\n

Have I set the settings correctly?<\/span><\/span><\/span><\/p>\n

Should I reduce the time scale factor?  And if I have to reduce it, to what number can I reduce it?<\/span><\/span><\/span><\/p>\n

Should I lower its value at the beginning of the solution and increase its value during the solution?<\/span><\/span><\/span><\/p>\n

Please let me know what I need to set up properly so that I can do a smooth study on the mesh.<\/span><\/span><\/span><\/p>\n

 <\/p>\n

Thanks in advance<\/span><\/span><\/span><\/p>\n

Regards<\/span><\/span><\/span><\/p>\n

 <\/p>\n","protected":false},"template":"","class_list":["post-315112","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t