湍流模型中的湍动能输运方程源项
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template<class TurbulenceModel, class BasicTurbulenceModel> tmp<fvScalarMatrix> kOmegaSST<TurbulenceModel, BasicTurbulenceModel>::kSource() const { return tmp<fvScalarMatrix> ( new fvScalarMatrix ( k_, dimVolume*this->rho_.dimensions()*k_.dimensions()/dimTime ) ); }
tmp<fvScalarMatrix> kEqn ( fvm::ddt(alpha, rho, k_) + fvm::div(alphaRhoPhi, k_) - fvm::laplacian(alpha*rho*DkEff(F1), k_) == alpha()*rho()*Pk(G) - fvm::SuSp((2.0/3.0)*alpha()*rho()*divU, k_) - fvm::Sp(alpha()*rho()*epsilonByk(F1, F23), k_) + kSource() + fvOptions(alpha, rho, k_) );
湍动能输运方程中的kSource()应该是源项,它为什么是k_,请问有没有人明白?