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add a phase diffusion term in k-epsilon turbulence model

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Old   February 12, 2020, 12:23
Question add a phase diffusion term in k-epsilon turbulence model
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yangqi
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Hi guys,

I would like to add a diffusion term into the k-epsilon equations so I wrote the following code:

- fvm::div(fvc::snGrad(alpha)*mesh.magSf()*fvc::inte rpolate(nut*rho), k_)

tmp<fvScalarMatrix> epsEqn
(
fvm::ddt(alpha, rho, epsilon_)
+ fvm::div(alphaRhoPhi, epsilon_)
- fvm::laplacian(alpha*rho*DepsilonEff(), epsilon_)
==
C1_*alpha()*rho()*G*epsilon_()/k_()
- fvm::SuSp(((2.0/3.0)*C1_ - C3_)*alpha()*rho()*divU, epsilon_)
- fvm::Sp(C2_*alpha()*rho()*epsilon_()/k_(), epsilon_)
- fvm::div(fvc::snGrad(alpha)*mesh.magSf()*fvc::inte rpolate(nut*rho), epsilon_)

However it cannot be compiled. Please help me to check where I need to modified. Thanks a lot!
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