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Differential SGS Stress Equation Model ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The DSEM uses a model version of the full balance equation for the SGS stress tensor to simulate the behaviour of B, hence,
d/dt(B) + div(U*B) - div(nuSgs*grad(B)) = P - c1*epsilon/k*B - 0.667*(1 - c1)*epsilon*I - c2*(P - 0.333*trP*I)
where
k = 0.5*tr(B), epsilon = ce*k^3/2/delta, epsilon/k = ce*k^1/2/delta P = -(B'L + L'B) nuSgs = ck*sqrt(k)*delta nuEff = nuSgs + nu
Definition in file DeardorffDiffStress.H.
Go to the source code of this file.
Namespaces | |
namespace | Foam |
namespace | Foam::LESmodels |
Classes | |
class | DeardorffDiffStress |