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driftFluxFoam: Rationalisation of the handling of Udm and tauDm
This commit is contained in:
Henry
@ -4,7 +4,7 @@
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(
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fvm::ddt(rho, U)
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+ fvm::div(rhoPhi, U)
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+ fvc::div(uRelModel.tau(), "div(phiUkm,Ukm)")
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+ fvc::div(UdmModel.tauDm())
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- fvm::laplacian(muEff, U)
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- fvc::div(muEff*dev2(T(fvc::grad(U))))
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==
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@ -13,7 +13,7 @@
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surfaceScalarField phir
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(
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mesh.Sf() & fvc::interpolate(uRelModel.Udm())
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mesh.Sf() & fvc::interpolate(UdmModel.Udm())
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);
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if (nAlphaSubCycles > 1)
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@ -86,7 +86,7 @@
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// Relative Velocity
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// ~~~~~~~~~~~~~~~~~
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autoPtr<relativeVelocityModel> uRelModelPtr
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autoPtr<relativeVelocityModel> UdmModelPtr
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(
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relativeVelocityModel::New
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(
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@ -95,7 +95,7 @@
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)
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);
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relativeVelocityModel& uRelModel(uRelModelPtr());
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relativeVelocityModel& UdmModel(UdmModelPtr());
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// Turbulence
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@ -82,7 +82,7 @@ int main(int argc, char *argv[])
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{
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#include "alphaControls.H"
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uRelModel.update();
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UdmModel.correct();
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#include "alphaEqnSubCycle.H"
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@ -62,11 +62,11 @@ Foam::relativeVelocityModels::general::~general()
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// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
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Foam::tmp<Foam::volVectorField>
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Foam::relativeVelocityModels::general::Ur() const
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void Foam::relativeVelocityModels::general::correct()
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{
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return
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V0_
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Udm_ =
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(rhoC_/rho())
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*V0_
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*(
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exp(-a_*max(alphaD_ - residualAlpha_, scalar(0)))
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- exp(-a1_*max(alphaD_ - residualAlpha_, scalar(0)))
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@ -89,8 +89,8 @@ public:
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// Member Functions
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//- Relative velocity
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virtual tmp<volVectorField> Ur() const;
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//- Update the diffusion velocity
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virtual void correct();
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};
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@ -85,23 +85,6 @@ Foam::relativeVelocityModel::relativeVelocityModel
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alphaC_.mesh(),
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dimensionedVector("Udm", dimVelocity, vector::zero),
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mixture.U().boundaryField().types()
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),
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tau_
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(
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IOobject
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(
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"Udm",
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alphaC_.time().timeName(),
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alphaC_.mesh()
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),
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alphaC_.mesh(),
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dimensionedSymmTensor
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(
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"Udm",
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sqr(dimVelocity)*dimDensity,
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symmTensor::zero
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)
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)
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{}
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@ -156,19 +139,28 @@ Foam::relativeVelocityModel::~relativeVelocityModel()
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// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
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void Foam::relativeVelocityModel::update()
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tmp<volScalarField> Foam::relativeVelocityModel::rho() const
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{
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tmp<volVectorField> URel(Ur());
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return alphaC_*rhoC_ + alphaD_*rhoD_;
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}
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tmp<volScalarField> betaC(alphaC_*rhoC_);
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tmp<volScalarField> betaD(alphaD_*rhoD_);
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tmp<volScalarField> rhoM(betaC() + betaD());
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tmp<volVectorField> Udm = URel()*betaC()/rhoM;
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tmp<volVectorField> Ucm = Udm() - URel;
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tmp<volSymmTensorField> Foam::relativeVelocityModel::tauDm() const
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{
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volScalarField betaC(alphaC_*rhoC_);
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volScalarField betaD(alphaD_*rhoD_);
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Udm_ = Udm();
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tau_ = betaD*sqr(Udm) + betaC*sqr(Ucm);
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// Calculate the relative velocity of the continuous phase w.r.t the mean
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volVectorField Ucm(betaD*Udm_/betaC);
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return tmp<volSymmTensorField>
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(
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new volSymmTensorField
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(
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"tauDm",
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betaD*sqr(Udm_) + betaC*sqr(Ucm)
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)
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);
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}
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@ -81,10 +81,7 @@ protected:
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const dimensionedScalar& rhoD_;
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//- Dispersed diffusion velocity
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volVectorField Udm_;
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//- Stress
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volSymmTensorField tau_;
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mutable volVectorField Udm_;
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public:
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@ -127,8 +124,8 @@ public:
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// Member Functions
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//- Calculate the relative velocity of the dispersed phase
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virtual tmp<volVectorField> Ur() const = 0;
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//- Return the mixture mean density
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tmp<volScalarField> rho() const;
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//- Return the diffusion velocity of the dispersed phase
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const volVectorField& Udm() const
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@ -137,13 +134,10 @@ public:
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}
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//- Return the stress tensor due to the phase transport
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const volSymmTensorField& tau() const
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{
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return tau_;
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}
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tmp<volSymmTensorField> tauDm() const;
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//- Update the stored diffusion velocity and stress
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void update();
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//- Update the diffusion velocity
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virtual void correct() = 0;
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};
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@ -61,13 +61,9 @@ Foam::relativeVelocityModels::simple::~simple()
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// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
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Foam::tmp<Foam::volVectorField>
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Foam::relativeVelocityModels::simple::Ur() const
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void Foam::relativeVelocityModels::simple::correct()
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{
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return
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V0_
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*pow(scalar(10), -a_*max(alphaD_, scalar(0)))
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/max(alphaC_, residualAlpha_);
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Udm_ = (rhoC_/rho())*V0_*pow(scalar(10), -a_*max(alphaD_, scalar(0)));
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}
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@ -86,8 +86,8 @@ public:
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// Member Functions
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//- Relative velocity
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virtual tmp<volVectorField> Ur() const;
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//- Update the diffusion velocity
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virtual void correct();
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};
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@ -2,7 +2,7 @@
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
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\\ / A nd | Copyright (C) 2011-2014 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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@ -26,7 +26,20 @@ Class
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Description
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limitWith differencing scheme limits the specified scheme with the
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specified limiter.
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limiter provided by another scheme.
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Example: limit the LUST scheme using the limiter of the filteredLinear2
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scheme for momentum convection
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\verbatim
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divSchemes
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{
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.
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.
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div(phi,U) Gauss limitWith LUST grad(U) filteredLinear2 0.5 0;
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.
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.
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}
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\endverbatim
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SourceFiles
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limitWith.C
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@ -30,7 +30,7 @@ divSchemes
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default none;
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div(rhoPhi,U) Gauss linearUpwind grad(U);
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div(phiUkm,Ukm) Gauss linear;
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div(tauDm) Gauss linear;
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"div\(phi,alpha.*\)" Gauss vanLeer;
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"div\(phirb,alpha.*\)" Gauss linear;
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div(rhoPhi,k) Gauss limitedLinear 1;
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@ -30,7 +30,7 @@ divSchemes
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default none;
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div(rhoPhi,U) Gauss linearUpwind grad(U);
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div(phiUkm,Ukm) Gauss linear;
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div(tauDm) Gauss linear;
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"div\(phi,alpha.*\)" Gauss vanLeer;
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"div\(phirb,alpha.*\)" Gauss linear;
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div(rhoPhi,k) Gauss limitedLinear 1;
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@ -30,7 +30,7 @@ divSchemes
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default none;
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div(rhoPhi,U) Gauss linearUpwind grad(U);
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div(phiUkm,Ukm) Gauss linear;
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div(tauDm) Gauss linear;
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"div\(phi,alpha.*\)" Gauss vanLeer;
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"div\(phirb,alpha.*\)" Gauss linear;
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div(rhoPhi,k) Gauss limitedLinear 1;
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