sixDoFAccelerationSourceTemplates.C

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#include "sixDoFAccelerationSource.H"
#include "fvMesh.H"
#include "fvMatrices.H"
#include "uniformDimensionedFields.H"
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
template<class AlphaFieldType, class RhoFieldType>
void Foam::fv::sixDoFAccelerationSource::addForce
(
    const AlphaFieldType& alpha,
    const RhoFieldType& rho,
    fvMatrix<vector>& eqn,
    const word& fieldName
) const
{
    const Vector<vector> accelerations
    (
        accelerations_->value(mesh().time().userTimeValue())
    );
 
    // If gravitational force is present combine with the linear acceleration
    if (mesh().foundObject<uniformDimensionedVectorField>("g"))
    {
        uniformDimensionedVectorField& g =
            mesh().lookupObjectRef<uniformDimensionedVectorField>("g");
 
        const uniformDimensionedScalarField& hRef =
            mesh().lookupObject<uniformDimensionedScalarField>("hRef");
 
        g = g_ - dimensionedVector("a", dimAcceleration, accelerations.x());
 
        dimensionedScalar ghRef(- mag(g)*hRef);
 
        mesh().lookupObjectRef<volScalarField>("gh") = (g & mesh().C()) - ghRef;
 
        mesh().lookupObjectRef<surfaceScalarField>("ghf") =
            (g & mesh().Cf()) - ghRef;
    }
    // ... otherwise include explicitly in the momentum equation
    else
    {
        const dimensionedVector a("a", dimAcceleration, accelerations.x());
        eqn -= alpha*rho*a;
    }
 
    dimensionedVector Omega
    (
        "Omega",
        dimensionSet(0, 0, -1, 0, 0),
        accelerations.y()
    );
 
    dimensionedVector dOmegaDT
    (
        "dOmegaDT",
        dimensionSet(0, 0, -2, 0, 0),
        accelerations.z()
    );
 
    eqn -=
    (
        alpha*rho*(2*Omega ^ eqn.psi())          // Coriolis force
      + alpha*rho*(Omega ^ (Omega ^ mesh().C())) // Centrifugal force
      + alpha*rho*(dOmegaDT ^ mesh().C())        // Angular acceleration force
    );
}
 
 
// ************************************************************************* //