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Info about Epsilon BC in the Launder-Sharma model

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Old   February 20, 2014, 12:43
Default Info about Epsilon BC in the Launder-Sharma model
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Samuele Z
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Dear All,

I am writing since I am trying to figure out how Epsilon is evaluated in the Launder-Sharma model.

Reading the file ~/OpenFOAM/OpenFOAM-2.2.2/src/turbulenceModels/incompressible/RAS/LaunderSharmaKE/LaunderSharmaKE.H I see this sentence:
Code:
        //- Note that epsilonTilda is returned as epsilon.
        //  This is the appropriate variable for most purposes.
        virtual tmp<volScalarField> epsilon() const
        {
            return epsilonTilda_;
        }
My questions are:
1. should I set the BC for Epsilon_Tilda, such that on the walls I set it to 0?
2. how about the outputs? Do I get Epsilon or Epsilon_Tilda?

Thanks a lot,
Samuele
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