momentumPredictor.C

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#include "VoFSolver.H"
#include "fvmDiv.H"
#include "fvcSnGrad.H"
#include "fvcReconstruct.H"
 
// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
void Foam::solvers::VoFSolver::momentumPredictor()
{
    volVectorField& U = U_;
 
    tUEqn =
    (
        fvm::ddt(rho, U) + fvm::div(rhoPhi, U)
      + MRF.DDt(rho, U)
      + divDevTau(U)
     ==
        fvModels().source(rho, U)
    );
    fvVectorMatrix& UEqn = tUEqn.ref();
 
    UEqn.relax();
 
    fvConstraints().constrain(UEqn);
 
    if (pimple.momentumPredictor())
    {
        solve
        (
            UEqn
         ==
            fvc::reconstruct
            (
                (
                    surfaceTensionForce()
                  - buoyancy.ghf*fvc::snGrad(rho)
                  - fvc::snGrad(p_rgh)
                ) * mesh.magSf()
            )
        );
 
        fvConstraints().constrain(U);
    }
}
 
 
// ************************************************************************* //