tractionDisplacementFvPatchVectorField.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
     \\/     M anipulation  |
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    for more details.
 
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#include "tractionDisplacementFvPatchVectorField.H"
#include "addToRunTimeSelectionTable.H"
#include "volFields.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
tractionDisplacementFvPatchVectorField::
tractionDisplacementFvPatchVectorField
(
    const fvPatch& p,
    const DimensionedField<vector, volMesh>& iF
)
:
    fixedGradientFvPatchVectorField(p, iF),
    traction_(p.size(), vector::zero),
    pressure_(p.size(), 0.0)
{
    fvPatchVectorField::operator=(patchInternalField());
    gradient() = vector::zero;
}
 
 
tractionDisplacementFvPatchVectorField::
tractionDisplacementFvPatchVectorField
(
    const tractionDisplacementFvPatchVectorField& tdpvf,
    const fvPatch& p,
    const DimensionedField<vector, volMesh>& iF,
    const fvPatchFieldMapper& mapper
)
:
    fixedGradientFvPatchVectorField(tdpvf, p, iF, mapper),
    traction_(tdpvf.traction_, mapper),
    pressure_(tdpvf.pressure_, mapper)
{}
 
 
tractionDisplacementFvPatchVectorField::
tractionDisplacementFvPatchVectorField
(
    const fvPatch& p,
    const DimensionedField<vector, volMesh>& iF,
    const dictionary& dict
)
:
    fixedGradientFvPatchVectorField(p, iF),
    traction_("traction", dict, p.size()),
    pressure_("pressure", dict, p.size())
{
    fvPatchVectorField::operator=(patchInternalField());
    gradient() = vector::zero;
}
 
 
tractionDisplacementFvPatchVectorField::
tractionDisplacementFvPatchVectorField
(
    const tractionDisplacementFvPatchVectorField& tdpvf
)
:
    fixedGradientFvPatchVectorField(tdpvf),
    traction_(tdpvf.traction_),
    pressure_(tdpvf.pressure_)
{}
 
 
tractionDisplacementFvPatchVectorField::
tractionDisplacementFvPatchVectorField
(
    const tractionDisplacementFvPatchVectorField& tdpvf,
    const DimensionedField<vector, volMesh>& iF
)
:
    fixedGradientFvPatchVectorField(tdpvf, iF),
    traction_(tdpvf.traction_),
    pressure_(tdpvf.pressure_)
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void tractionDisplacementFvPatchVectorField::autoMap
(
    const fvPatchFieldMapper& m
)
{
    fixedGradientFvPatchVectorField::autoMap(m);
    traction_.autoMap(m);
    pressure_.autoMap(m);
}
 
 
void tractionDisplacementFvPatchVectorField::rmap
(
    const fvPatchVectorField& ptf,
    const labelList& addr
)
{
    fixedGradientFvPatchVectorField::rmap(ptf, addr);
 
    const tractionDisplacementFvPatchVectorField& dmptf =
        refCast<const tractionDisplacementFvPatchVectorField>(ptf);
 
    traction_.rmap(dmptf.traction_, addr);
    pressure_.rmap(dmptf.pressure_, addr);
}
 
 
void tractionDisplacementFvPatchVectorField::updateCoeffs()
{
    if (updated())
    {
        return;
    }
 
    const dictionary& mechanicalProperties =
        db().lookupObject<IOdictionary>("mechanicalProperties");
 
    const dictionary& thermalProperties =
        db().lookupObject<IOdictionary>("thermalProperties");
 
 
    const fvPatchField<scalar>& rho =
        patch().lookupPatchField<volScalarField, scalar>("rho");
 
    const fvPatchField<scalar>& rhoE =
        patch().lookupPatchField<volScalarField, scalar>("E");
 
    const fvPatchField<scalar>& nu =
        patch().lookupPatchField<volScalarField, scalar>("nu");
 
    scalarField E(rhoE/rho);
    scalarField mu(E/(2.0*(1.0 + nu)));
    scalarField lambda(nu*E/((1.0 + nu)*(1.0 - 2.0*nu)));
    scalarField threeK(E/(1.0 - 2.0*nu));
 
    Switch planeStress(mechanicalProperties.lookup("planeStress"));
 
    if (planeStress)
    {
        lambda = nu*E/((1.0 + nu)*(1.0 - nu));
        threeK = E/(1.0 - nu);
    }
 
    scalarField twoMuLambda(2*mu + lambda);
 
    vectorField n(patch().nf());
 
    const fvPatchField<symmTensor>& sigmaD =
        patch().lookupPatchField<volSymmTensorField, symmTensor>("sigmaD");
 
    gradient() =
    (
        (traction_ - pressure_*n)/rho
      + twoMuLambda*fvPatchField<vector>::snGrad() - (n & sigmaD)
    )/twoMuLambda;
 
    Switch thermalStress(thermalProperties.lookup("thermalStress"));
 
    if (thermalStress)
    {
        const fvPatchField<scalar>&  threeKalpha=
            patch().lookupPatchField<volScalarField, scalar>("threeKalpha");
 
        const fvPatchField<scalar>& T =
            patch().lookupPatchField<volScalarField, scalar>("T");
 
        gradient() += n*threeKalpha*T/twoMuLambda;
    }
 
    fixedGradientFvPatchVectorField::updateCoeffs();
}
 
 
void tractionDisplacementFvPatchVectorField::write(Ostream& os) const
{
    fvPatchVectorField::write(os);
    traction_.writeEntry("traction", os);
    pressure_.writeEntry("pressure", os);
    writeEntry("value", os);
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
makePatchTypeField
(
    fvPatchVectorField,
    tractionDisplacementFvPatchVectorField
);
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// ************************************************************************* //