SGS Model used by DES simulations

chi86 · March 10, 2018, 13:59

Hi,
does anyone know what SGS model is employed in the DES simulation in FLUENT. I cant find anything in the theory guide.

fanch33 · March 11, 2018, 11:12

Hi,

with DDES model, it can be shown by Under equilibrium turbulence conditions (production = dissipation), DDES models reduces to Smagorinsky sgs model. It is the case for SST DDES. For k-epsilon, I don't really know but I guess it is the same thing. You can find it in the SDES part of the theory guide 4.12.2 for the R18 version of Fluent.

François

March 10, 2018, 13:59	SGS Model used by DES simulations	#1
chi86 New Member christoph irrenfried Join Date: Feb 2014 Posts: 8 Rep Power: 13	Hi, does anyone know what SGS model is employed in the DES simulation in FLUENT. I cant find anything in the theory guide.

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March 11, 2018, 11:12		#2
fanch33 Member Join Date: Feb 2015 Posts: 32 Rep Power: 12	Hi, with DDES model, it can be shown by Under equilibrium turbulence conditions (production = dissipation), DDES models reduces to Smagorinsky sgs model. It is the case for SST DDES. For k-epsilon, I don't really know but I guess it is the same thing. You can find it in the SDES part of the theory guide 4.12.2 for the R18 version of Fluent. François