|July 2, 2012, 16:38||
ICEM CFD orthogonal smoother issue
Join Date: Apr 2011
Posts: 2Rep Power: 0
I have couple of questions related to ICEM:
1. I have generated a 3D structured grid for a turbomachinery ducted flow geometry (complexity:: medium, 3D). The grid metrics (determinants, angles) seem to be alright both in ICEM and OpenFOAM (checkMesh utility). But, when I run the solver (pisoFoam, running LES), the solution is diverging. A different mesh topology is working fine, though. So, it is something to do with grid itself. I am not sure how to identify what is the problem. Do you have any suggestions on this ?
2. I have the structured grid (3D) which shows good quality metrics before running any smoother on it. But, when I run any smoother, it becomes worse -- with negative determinants. I tried the suggestion in user manual to use high stabilization factors of around 8 to see if the mesh will retain its original quality while trying for orthogonality. But, it is also not working for me. Is there a way I can avoid this issue ?
I have a feeling that both the above problems are related. I am not sure if any one else has experienced this sort of strange issue.
|July 2, 2012, 18:18||
Ghazlani M. Ali
Join Date: May 2011
Blog Entries: 23Rep Power: 20
i stumbled upon this good post by simon:
New to ICEM CFD, try this document --> http://goo.gl/G2gkE
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