61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
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{
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word alphaScheme("div(phi,alpha)");
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word alpharScheme("div(phirb,alpha)");
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// New formulation of phir: Co condition
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// Note faceOversetMask. HJ, 16/Jun/2015
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surfaceScalarField phir
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(
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"phir",
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faceOversetMask*interface.cAlpha()*interface.nHatf()*
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min
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(
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scalar(0.5)/ // This is ref compression Co number for cAlpha = 1
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(
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mesh.surfaceInterpolation::deltaCoeffs()*
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mesh.time().deltaT()
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),
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mag(phi/mesh.magSf())
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+ dimensionedScalar("small", dimVelocity, 1e-3)
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)
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);
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fvScalarMatrix alpha1Eqn
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(
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fvm::ddt(alpha1)
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+ fvm::div(phi, alpha1, alphaScheme)
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+ fvm::div
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(
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-fvc::flux(-phir, scalar(1) - alpha1, alpharScheme),
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alpha1,
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alpharScheme
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)
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);
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alpha1Eqn.relax();
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alpha1Eqn.solve();
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// Update mass flux
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rhoPhi = alpha1Eqn.flux()*(rho1 - rho2) + phi*rho2;
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Info<< "Liquid phase volume fraction = "
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<< alpha1.weightedAverage(mesh.V()).value()
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<< " Min(alpha1) = " << min(cellOversetMask*alpha1).value()
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<< " Max(alpha1) = " << max(cellOversetMask*alpha1).value()
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<< endl;
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// Limit alpha to handle overset cells
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alpha1.max(0);
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alpha1.min(1);
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// Update of interface and density
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interface.correct();
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twoPhaseProperties.correct();
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// Calculate density using limited alpha1
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rho = twoPhaseProperties.rho();
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// Parallel update in snGrad. HJ, 8/Dec/2012
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rho.correctBoundaryConditions();
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}
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