Hi

i'm doing a radial turbine simulation with the K_eps as a turbulence model ,the probleme is that my actual hardware is not as that,this is why i'm using 5 inflation layers to keep low the elements number ,is it enough to get accurate results,and my seconde question ,in which region i should use a small mesh?

the more important question is ,when i'm trying to get a good mesh ,how i should manage this process,it means ;starting from let us say any mesh ,how could i know the problem region and correct the mesh there?

expecting a response from Glenn

thanks

Hi,

Read the CFX documentation about accuracy of simulations and the best practises guide for turbo machinery. After that read some general stuff on CFD accuracy - "Computational Fluid Dynamics" by Roache has a thorough discussion about CFD accuracy. Also the Journal of Fluids Engineering have an editorial policy on numerical accuracy which is well worth taking note: http://journaltool.asme.org/Template...umAccuracy.pdf

Other references to look at include http://www.grc.nasa.gov/WWW/wind/val.../tutorial.html

Glenn Horrocks