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James February 25, 2009 09:15

LES & DES Question for wall modelling
Is there such a thing as Wall-Functions for LES & DES Models? I know there no option in FLUENT, but has there been any application/research paper and is it in any way feasible?

Thank you


Paolo Lampitella February 25, 2009 12:14

Re: LES & DES Question for wall modelling
I don't know about DES but in the Fluent's LES there is the automatic activation of the standard wall model for, as i remember, y+ bigger than 30.

For smaller values there is a blending of the log-law and the linear-law, and for y+ smaller than 5 there should be the simple dirichlet boundary condition.

For more informations you can check the manual, the turbulence modeling chapter is where this kind of informations is contained.

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