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compressible Smagorinsky SGS model: corrected calculation of k in k()

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This commit is contained in:
Henry 2012-01-23 10:14:58 +00:00
parent 9eb026fb7e
commit 179b6976b5
1 changed files with 8 additions and 2 deletions
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10
src/turbulenceModels/compressible/LES/Smagorinsky/Smagorinsky.H
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@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
\\ / A nd | Copyright (C) 2011-2012 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@ -113,7 +113,13 @@ public:
// calculated from the given velocity gradient
tmp<volScalarField> k(const tmp<volTensorField>& gradU) const
{
return (2.0*ck_/ce_)*sqr(delta())*magSqr(dev(symm(gradU)));
volSymmTensorField D(symm(gradU));
volScalarField a(ce_/delta());
volScalarField b((2.0/3.0)*tr(D));
volScalarField c(2*ck_*delta()*(dev(D) && D));
return sqr((-b + sqrt(sqr(b) + 4*a*c))/(2*a));
}
//- Return SGS kinetic energy