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STYLE: contactAngleForce: modernise code
This commit is contained in:
Kutalmis Bercin
committed by
Andrew Heather
Andrew Heather
parent
993b7af513
commit
91a62ca05a
@ -44,13 +44,6 @@ namespace areaSurfaceFilmModels
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defineTypeNameAndDebug(contactAngleForce, 0);
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// * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * * //
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void contactAngleForce::initialise()
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{
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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contactAngleForce::contactAngleForce
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@ -62,28 +55,7 @@ contactAngleForce::contactAngleForce
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:
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force(typeName, film, dict),
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Ccf_(coeffDict_.get<scalar>("Ccf")),
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hCrit_(coeffDict_.getOrDefault<scalar>("hCrit", GREAT)),
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mask_
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(
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IOobject
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(
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typeName + ":fContactForceMask",
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film.primaryMesh().time().timeName(),
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film.primaryMesh(),
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IOobject::NO_READ,
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IOobject::NO_WRITE
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),
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film.regionMesh(),
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dimensionedScalar("mask", dimless, 1.0)
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)
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{
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initialise();
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}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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contactAngleForce::~contactAngleForce()
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hCrit_(coeffDict_.getOrDefault<scalar>("hCrit", GREAT))
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{}
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@ -91,73 +63,69 @@ contactAngleForce::~contactAngleForce()
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tmp<faVectorMatrix> contactAngleForce::correct(areaVectorField& U)
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{
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tmp<areaVectorField> tForce
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auto tforce = tmp<areaVectorField>::New
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(
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new areaVectorField
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IOobject
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(
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IOobject
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(
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typeName + ":contactForce",
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film().primaryMesh().time().timeName(),
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film().primaryMesh(),
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IOobject::NO_READ,
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IOobject::NO_WRITE
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),
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film().regionMesh(),
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dimensionedVector(dimForce/dimDensity/dimArea, Zero)
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)
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IOobject::scopedName(typeName, "contactForce"),
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film().primaryMesh().time().timeName(),
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film().primaryMesh(),
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IOobject::NO_READ,
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IOobject::NO_WRITE,
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IOobject::NO_REGISTER
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),
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film().regionMesh(),
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dimensionedVector(dimForce/dimDensity/dimArea, Zero)
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);
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vectorField& force = tForce.ref().primitiveFieldRef();
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vectorField& force = tforce.ref().primitiveFieldRef();
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const labelUList& own = film().regionMesh().owner();
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const labelUList& nbr = film().regionMesh().neighbour();
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const labelUList& nei = film().regionMesh().neighbour();
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const DimensionedField<scalar, areaMesh>& magSf = film().regionMesh().S();
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const scalarField& magSff = magSf.field();
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tmp<areaScalarField> talpha = film().alpha();
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const areaScalarField& sigma = film().sigma();
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const edgeScalarField& invDx = film().regionMesh().deltaCoeffs();
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const areaScalarField& sigma = film().sigma();
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const areaScalarField& mu = film().mu();
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const areaScalarField& rhof = film().rho();
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const areaVectorField& Uf = film().Uf();
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const areaScalarField& hf = film().h();
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tmp<areaScalarField> talpha = film().alpha();
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const areaScalarField& alpha = talpha();
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tmp<areaScalarField> ttheta = theta();
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const areaScalarField& theta = ttheta();
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const areaVectorField& Uf = film().Uf();
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const areaScalarField& hf = film().h();
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tmp<areaVectorField> tgradAlpha = fac::grad(alpha);
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const areaVectorField& gradAlpha = tgradAlpha();
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const areaVectorField gradAlpha(fac::grad(talpha()));
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forAll(nbr, edgei)
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forAll(nei, edgei)
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{
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const label faceO = own[edgei];
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const label faceN = nbr[edgei];
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const label faceN = nei[edgei];
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label facei = -1;
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if ((talpha()[faceO] > 0.5) && (talpha()[faceN] < 0.5))
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if ((alpha[faceO] > 0.5) && (alpha[faceN] < 0.5))
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{
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facei = faceO;
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}
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else if ((talpha()[faceO] < 0.5) && (talpha()[faceN] > 0.5))
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else if ((alpha[faceO] < 0.5) && (alpha[faceN] > 0.5))
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{
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facei = faceN;
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}
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if (facei != -1 && mask_[facei] > 0.5)
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if (facei != -1)
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{
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const scalar invDx = film().regionMesh().deltaCoeffs()[edgei];
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const vector n
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(
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gradAlpha[facei]/(mag(gradAlpha[facei]) + ROOTVSMALL)
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);
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const vector n(normalised(gradAlpha[facei]));
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const scalar cosTheta = cos(degToRad(theta[facei]));
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// (MHDX:Eq. 13)
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force[facei] +=
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Ccf_*n*sigma[facei]*(1 - cosTheta)
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/invDx/rhof[facei]/magSff[facei];
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/invDx[edgei]/rhof[facei]/magSff[facei];
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// (NDPC:Eq. 11)
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if (hf[facei] > hCrit_)
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@ -185,16 +153,13 @@ tmp<faVectorMatrix> contactAngleForce::correct(areaVectorField& U)
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if (film().regionMesh().time().writeTime())
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{
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tForce().write();
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tforce().write();
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gradAlpha.write();
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}
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tmp<faVectorMatrix> tfvm
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(
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new faVectorMatrix(U, dimForce/dimDensity)
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);
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auto tfvm = tmp<faVectorMatrix>::New(U, dimForce/dimDensity);
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tfvm.ref() += tForce;
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tfvm.ref() += tforce;
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return tfvm;
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}
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@ -32,6 +32,36 @@ Description
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The effect of the contact angle force can be ignored over a specified
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distance from patches.
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The contact-angle force is implemented as follows:
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\f[
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\vec{f}_\theta =
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\beta \frac{\sigma (1 - cos(\theta))}{\Delta_{cl}} \vec{n}_{cl}
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\frac{1}{\rho_f|\vec{S}_f|}
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- \vec{f}_{cl}
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\f]
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with if \f$ h > h_{crit} \f$:
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\f[
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\vec{f}_{cl} = \nu_f \frac{\vec{U}_f}{h_{crit}}
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\f]
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where
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\vartable
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\vec{f}_\theta | Contact-angle force [N/m^2/rho]
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\beta | Empirical constant [-]
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\sigma | Liquid-air interfacial surface tension [kg/s^2]
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\theta | Contact angle [rad]
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\Delta_{cl} | Inverse width in direction normal to contact line [1/m]
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\vec{n}_{cl} | Direction normal to contact line [-]
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\rho_f | Film density [kg/m^3]
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\vec{S}_f | Face-area vector [m^2]
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\vec{f}_{cl} | Contact-line movement force [N/m^2/rho]
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\nu_f | Film kinematic viscosity [m^2/s]
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\vec{U}_f | Film velocity [m/s]
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h_{crit} | Critical film height [m]
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\endvartable
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Reference:
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\verbatim
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Governing equations (tag:MHDX):
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@ -46,13 +76,38 @@ Description
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Springer Vieweg, Wiesbaden.
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\endverbatim
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Usage
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Minimal example:
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\verbatim
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{
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// Mandatory entries
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Ccf <scalar>;
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// Optional entries
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hCrit <scalar>;
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// Inherited entries
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...
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}
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\endverbatim
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where the entries mean:
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\table
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Property | Description | Type | Reqd | Deflt
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Ccf | Empirical coefficient | scalar | yes | -
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hCrit | Critical film height [m] | scalar | no | GREAT
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\endtable
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The inherited entries are elaborated in:
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- \link force.H \endlink
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SourceFiles
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contactAngleForce.C
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\*---------------------------------------------------------------------------*/
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#ifndef contactAngleForce_H
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#define contactAngleForce_H
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#ifndef areaSurfaceFilmModels_contactAngleForce_H
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#define areaSurfaceFilmModels_contactAngleForce_H
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#include "force.H"
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@ -81,15 +136,9 @@ class contactAngleForce
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//- Critical film thickness [m]
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scalar hCrit_;
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//- Mask over which force is applied
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areaScalarField mask_;
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// Private Member Functions
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//- Initialise
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void initialise();
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//- No copy construct
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contactAngleForce(const contactAngleForce&) = delete;
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@ -121,7 +170,7 @@ public:
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//- Destructor
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virtual ~contactAngleForce();
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virtual ~contactAngleForce() = default;
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// Member Functions
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