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LES model : smagorinsky

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Old   June 4, 2011, 00:54
Default LES model : smagorinsky
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I use LES model for square cross section channel to see secondary flow , and now i want to have better result , for this reason i change smagorinsky coefficient ? who can know about this coefficient ? and help me . this coefficient in Oodles solver in ubuntu 10.4 are


SmagorinskyCoeffs
{
ce 1.05;
ck 0.07;
}
Smagorinsky2Coeffs
{
ce 1.05;
ck 0.07;
cD2 0.02;
}
spectEddyViscCoeffs
{
ce 1.05;
cB 8.22;
cK1 0.83;
cK2 1.03;
cK3 4.75;
cK4 2.55;
}
dynSmagorinskyCoeffs
{
ce 1.05;
filter simple;
}
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