fcbdfd4e44
Reduces or eliminates staggering patterns due to cell-force imbalances Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1363
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
mrfZones.correctBoundaryVelocity(U1);
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mrfZones.correctBoundaryVelocity(U2);
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mrfZones.correctBoundaryVelocity(U);
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fvVectorMatrix U1Eqn(U1, rho1.dimensions()*U1.dimensions()*dimVol/dimTime);
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fvVectorMatrix U2Eqn(U2, rho2.dimensions()*U2.dimensions()*dimVol/dimTime);
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volScalarField dragCoeff(fluid.dragCoeff());
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{
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volScalarField virtualMassCoeff(fluid.virtualMassCoeff());
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{
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U1Eqn =
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(
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fvm::ddt(alpha1, rho1, U1) + fvm::div(alphaRhoPhi1, U1)
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- fvm::Sp(contErr1, U1)
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+ mrfZones(alpha1*rho1 + virtualMassCoeff, U1)
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+ phase1.turbulence().divDevRhoReff(U1)
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==
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- virtualMassCoeff
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*(
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fvm::ddt(U1)
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+ fvm::div(phi1, U1)
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- fvm::Sp(fvc::div(phi1), U1)
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- DDtU2
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)
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+ fvOptions(alpha1, rho1, U1)
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);
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U1Eqn.relax();
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U1Eqn += fvm::Sp(dragCoeff, U1);
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fvOptions.constrain(U1Eqn);
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}
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{
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U2Eqn =
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(
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fvm::ddt(alpha2, rho2, U2) + fvm::div(alphaRhoPhi2, U2)
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- fvm::Sp(contErr2, U2)
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+ mrfZones(alpha2*rho2 + virtualMassCoeff, U2)
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+ phase2.turbulence().divDevRhoReff(U2)
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==
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- virtualMassCoeff
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*(
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fvm::ddt(U2)
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+ fvm::div(phi2, U2)
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- fvm::Sp(fvc::div(phi2), U2)
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- DDtU1
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)
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+ fvOptions(alpha2, rho2, U2)
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);
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U2Eqn.relax();
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U2Eqn += fvm::Sp(dragCoeff, U2);
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fvOptions.constrain(U2Eqn);
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}
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}
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