65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
if (turbulence)
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{
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if (mesh.changing())
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{
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y.correct();
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}
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tmp<volTensorField> tgradU2(fvc::grad(U2));
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volScalarField G(2*nut2*(tgradU2() && dev(symm(tgradU2()))));
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tgradU2.clear();
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#include "wallFunctions.H"
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// Dissipation equation
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fvScalarMatrix epsEqn
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(
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fvm::ddt(alpha2, epsilon)
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+ fvm::div(alphaPhi2, epsilon)
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- fvm::laplacian
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(
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alpha1Eps*nuEff2, epsilon,
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"laplacian(DepsilonEff,epsilon)"
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)
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==
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C1*alpha2*G*epsilon/k
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- fvm::Sp(C2*alpha2*epsilon/k, epsilon)
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);
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#include "wallDissipation.H"
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epsEqn.relax();
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epsEqn.solve();
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epsilon.max(dimensionedScalar("zero", epsilon.dimensions(), 1.0e-15));
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// Turbulent kinetic energy equation
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fvScalarMatrix kEqn
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(
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fvm::ddt(alpha2, k)
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+ fvm::div(alphaPhi2, k)
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- fvm::laplacian
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(
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alpha1k*nuEff2, k,
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"laplacian(DkEff,k)"
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)
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==
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alpha2*G
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- fvm::Sp(alpha2*epsilon/k, k)
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);
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kEqn.relax();
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kEqn.solve();
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k.max(dimensionedScalar("zero", k.dimensions(), 1.0e-8));
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//- Re-calculate turbulence viscosity
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nut2 = Cmu*sqr(k)/epsilon;
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#include "wallViscosity.H"
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}
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nuEff2 = nut2 + thermo2.mu()/rho2;
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