CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   OpenFOAM Running, Solving & CFD (http://www.cfd-online.com/Forums/openfoam-solving/)
-   -   LaunderGibson - turbulent viscosity in epsilon equation (http://www.cfd-online.com/Forums/openfoam-solving/109281-laundergibson-turbulent-viscosity-epsilon-equation.html)

meinenn November 14, 2012 05:21

LaunderGibson - turbulent viscosity in epsilon equation
 
Hej
I'm inserting the LaunderGibson tubulence model to a two phase solver. Now I remarked that in LaunderGibson, in the transport equation for epsilon, a term DepsilonEff is used which contains the turbulent viscosity. Can someone explain why we have this viscosity? In my opinion, the great advantage of reynold stress models is the fact that we do not need the eddy viscosity assumption. So I'm a bit confused why there still is this turbulent viscosity...
Thanks for help in advance
Nik


All times are GMT -4. The time now is 02:04.