Hi,

I have just learnt to workwith CFX. I would like to know when to use structured meshing (ICEM) and the unstructured meshing (Workbench). Is it the regular or irregular geometry shapes which will decide the choice?

Further, it is very easy to generate unstructured mesh in CFX than generating structured mesh in ICEM. Therefore I prefer to work in unstructured mesh for all problems. Is it the right way?

Clarifications requested!

Hello,

The selection of the mesh depends on many factors. The accuracy of the results you expect, the speed of convergence, cpmplexity of the model, etc.. plays a role in that. Ideally speaking a hex mesh with aspect ratio 1 and streatch ration 1 is the best. But is obvious that it is not practical to build such a mesh and we do compromise on the type and nature of the mesh depending on our problem. There are some earlier posts in this forum and also you can refer to the Best practice documents for the nature of the problem you solve.

Regards Anantha