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ENH: Updated film contact angle force to make use of alpha field

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This commit is contained in:
andy
2012-11-12 11:30:00 +00:00
parent e8e95a38cb
commit fe37519819
2 changed files with 12 additions and 24 deletions
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31
src/regionModels/surfaceFilmModels/submodels/kinematic/force/contactAngleForce/contactAngleForce.C
View File

@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
\\ / A nd | Copyright (C) 2011-2012 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@ -52,7 +52,6 @@ contactAngleForce::contactAngleForce
)
:
force(typeName, owner, dict),
deltaWet_(readScalar(coeffs_.lookup("deltaWet"))),
Ccf_(readScalar(coeffs_.lookup("Ccf"))),
rndGen_(label(0), -1),
distribution_
@ -82,7 +81,7 @@ tmp<fvVectorMatrix> contactAngleForce::correct(volVectorField& U)
(
IOobject
(
"contactForce",
typeName + ".contactForce",
owner_.time().timeName(),
owner_.regionMesh(),
IOobject::NO_READ,
@ -100,17 +99,11 @@ tmp<fvVectorMatrix> contactAngleForce::correct(volVectorField& U)
const scalarField& magSf = owner_.magSf();
const volScalarField& delta = owner_.delta();
const volScalarField& alpha = owner_.alpha();
const volScalarField& sigma = owner_.sigma();
volScalarField alpha
(
"alpha",
pos(delta - dimensionedScalar("deltaWet", dimLength, deltaWet_))
);
volVectorField gradAlpha(fvc::grad(alpha));
scalarField nHits(owner_.regionMesh().nCells(), 0.0);
forAll(nbr, faceI)
@ -119,19 +112,17 @@ tmp<fvVectorMatrix> contactAngleForce::correct(volVectorField& U)
const label cellN = nbr[faceI];
label cellI = -1;
if ((delta[cellO] > deltaWet_) && (delta[cellN] < deltaWet_))
if ((alpha[cellO] > 0.5) && (alpha[cellN] < 0.5))
{
cellI = cellO;
}
else if ((delta[cellO] < deltaWet_) && (delta[cellN] > deltaWet_))
else if ((alpha[cellO] < 0.5) && (alpha[cellN] > 0.5))
{
cellI = cellN;
}
if (cellI != -1)
{
// const scalar dx = Foam::sqrt(magSf[cellI]);
// bit of a cheat, but ok for regular meshes
const scalar dx = owner_.regionMesh().deltaCoeffs()[faceI];
const vector n =
gradAlpha[cellI]/(mag(gradAlpha[cellI]) + ROOTVSMALL);
@ -141,17 +132,17 @@ tmp<fvVectorMatrix> contactAngleForce::correct(volVectorField& U)
}
}
forAll(delta.boundaryField(), patchI)
forAll(alpha.boundaryField(), patchI)
{
const fvPatchField<scalar>& df = delta.boundaryField()[patchI];
const scalarField& dx = df.patch().deltaCoeffs();
const labelUList& faceCells = df.patch().faceCells();
const fvPatchField<scalar>& alphaf = alpha.boundaryField()[patchI];
const scalarField& dx = alphaf.patch().deltaCoeffs();
const labelUList& faceCells = alphaf.patch().faceCells();
forAll(df, faceI)
forAll(alphaf, faceI)
{
label cellO = faceCells[faceI];
if ((delta[cellO] > deltaWet_) && (df[faceI] < deltaWet_))
if ((alpha[cellO] > 0.5) && (alphaf[faceI] < 0.5))
{
const vector n =
gradAlpha[cellO]/(mag(gradAlpha[cellO]) + ROOTVSMALL);

5
src/regionModels/surfaceFilmModels/submodels/kinematic/force/contactAngleForce/contactAngleForce.H
View File

@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
\\ / A nd | Copyright (C) 2011-2012 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@ -60,9 +60,6 @@ private:
// Private Data
//- Threshold film thickness beyon which the film is 'wet'
scalar deltaWet_;
//- Coefficient applied to the contact angle force
scalar Ccf_;