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filmViscosityModel/thixotropicViscosity/thixotropicViscosity: Remove the spurious mask and correct the blending

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This commit is contained in:
Henry
2015-06-03 17:29:18 +01:00
parent 2c61c22312
commit e2c0ae0328
1 changed files with 9 additions and 10 deletions
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19
src/regionModels/surfaceFilmModels/submodels/thermo/filmViscosityModel/thixotropicViscosity/thixotropicViscosity.C
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@ -2,7 +2,7 @@
========= | ========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | \\ / O peration |
\\ / A nd | Copyright (C) 2013-2014 OpenFOAM Foundation \\ / A nd | Copyright (C) 2013-2015 OpenFOAM Foundation
\\/ M anipulation | \\/ M anipulation |
------------------------------------------------------------------------------- -------------------------------------------------------------------------------
License License
@ -59,24 +59,23 @@ void thixotropicViscosity::updateMu()
{ {
const kinematicSingleLayer& film = filmType<kinematicSingleLayer>(); const kinematicSingleLayer& film = filmType<kinematicSingleLayer>();
// blend based on mass fraction of added- to existing film mass // Blend based on mass fraction of added- to existing film mass
const dimensionedScalar m0("zero", dimMass, 0.0); const dimensionedScalar m0("zero", dimMass, 0.0);
const dimensionedScalar mSMALL("SMALL", dimMass, ROOTVSMALL); const dimensionedScalar mSMALL("SMALL", dimMass, ROOTVSMALL);
const volScalarField deltaMass("deltaMass", max(m0, film.deltaMass())); const volScalarField deltaMass("deltaMass", max(m0, film.deltaMass()));
const volScalarField filmMass("filmMass", film.netMass() + mSMALL); const volScalarField filmMass("filmMass", film.netMass() + mSMALL);
const volScalarField mask(pos(film.delta() - film.deltaSmall()));
// weighting field to blend new and existing mass contributions // Weighting field to blend new and existing mass contributions
const volScalarField w const volScalarField w
( (
"w", "w",
max(scalar(0.0), min(scalar(1.0), deltaMass/(deltaMass + filmMass))) max(scalar(0.0), min(scalar(1.0), deltaMass/(deltaMass + filmMass)))
); );
// set new viscosity
mu_ = mu_ =
mask*muInf_/(sqr(1.0 - K_*(1.0 - w)*lambda_) + ROOTVSMALL) w*muInf_
+ (1 - mask)*muInf_; + (1 - w)*muInf_/(sqr(1.0 - K_*lambda_) + ROOTVSMALL);
mu_.correctBoundaryConditions(); mu_.correctBoundaryConditions();
} }
@ -105,7 +104,7 @@ thixotropicViscosity::thixotropicViscosity
typeName + ":lambda", typeName + ":lambda",
owner.regionMesh().time().timeName(), owner.regionMesh().time().timeName(),
owner.regionMesh(), owner.regionMesh(),
IOobject::MUST_READ_IF_MODIFIED, IOobject::MUST_READ,
IOobject::AUTO_WRITE IOobject::AUTO_WRITE
), ),
owner.regionMesh() owner.regionMesh()
@ -114,7 +113,7 @@ thixotropicViscosity::thixotropicViscosity
lambda_.min(1.0); lambda_.min(1.0);
lambda_.max(0.0); lambda_.max(0.0);
// initialise viscosity to inf value // Initialise viscosity to inf value
// - cannot call updateMu() since this calls film.netMass() which // - cannot call updateMu() since this calls film.netMass() which
// cannot be evaluated yet (still in construction) // cannot be evaluated yet (still in construction)
mu_ = muInf_; mu_ = muInf_;
@ -146,7 +145,7 @@ void thixotropicViscosity::correct
const surfaceScalarField& phi = film.phi(); const surfaceScalarField& phi = film.phi();
const volScalarField& alpha = film.alpha(); const volScalarField& alpha = film.alpha();
// gamma-dot (shear rate) // Shear rate
volScalarField gDot("gDot", alpha*mag(U - Uw)/(delta + film.deltaSmall())); volScalarField gDot("gDot", alpha*mag(U - Uw)/(delta + film.deltaSmall()));
if (debug && this->owner().regionMesh().time().outputTime()) if (debug && this->owner().regionMesh().time().outputTime())