[Mitpostdoc]

Hello there.
I worked for the past 2 months on the meshing of a very complex centrifugal compressor. After many days of frustration with Icem I managed to have a clean and smooth structured mesh of the geometry. However, whenever I try to refine it, I have negative determinants everywhere .

I am trying to do a CFD simulation of a high pressure compressor with supercritical CO2. The Re is very high and the estimated cell size in order to have a reasonable y+ near the wall is between 1 and 0.1 microns .

I tried to repair the geometry several times with icem, but even if I set the model tolerance and triangulation tolerance to 10^-07 I still can not fix it. Moreover, since Icem lacks of proper methods to define periodic planes, I had to manually crate all the periodic boundaries. Needless to say that all the geometric entities I created share the same tolerance of the geometry.

Is there anybody who can help me? Does anybody have any experience with this kind of issue?

thanks