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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2013-2016 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::phasePressureModel
Description
Particle-particle phase-pressure RAS model
The derivative of the phase-pressure with respect to the phase-fraction
is evaluated as
g0*min(exp(preAlphaExp*(alpha - alphaMax)), expMax)
The default model coefficients correspond to the following:
\verbatim
phasePressureCoeffs
{
preAlphaExp 500;
expMax 1000;
alphaMax 0.62;
g0 1000;
}
\endverbatim
SourceFiles
phasePressureModel.C
\*---------------------------------------------------------------------------*/
#ifndef phasePressureModel_H
#define phasePressureModel_H
#include "RASModel.H"
#include "eddyViscosity.H"
#include "PhaseCompressibleTurbulenceModel.H"
#include "ThermalDiffusivity.H"
#include "EddyDiffusivity.H"
#include "phaseModel.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace RASModels
{
/*---------------------------------------------------------------------------*\
Class phasePressureModel Declaration
\*---------------------------------------------------------------------------*/
class phasePressureModel
:
public eddyViscosity
<
RASModel<EddyDiffusivity<ThermalDiffusivity
<
PhaseCompressibleTurbulenceModel<phaseModel>
>>>
>
{
// Private data
// Input Fields
const phaseModel& phase_;
// Kinetic Theory Model coefficients
//- Maximum packing phase-fraction
scalar alphaMax_;
//- Pre-exponential factor
scalar preAlphaExp_;
//- Maximum limit of the exponential
scalar expMax_;
//- g0
dimensionedScalar g0_;
// Private Member Functions
void correctNut()
{}
//- Disallow default bitwise copy construct
phasePressureModel(const phasePressureModel&);
//- Disallow default bitwise assignment
void operator=(const phasePressureModel&);
public:
//- Runtime type information
TypeName("phasePressure");
// Constructors
//- Construct from components
phasePressureModel
(
const volScalarField& alpha,
const volScalarField& rho,
const volVectorField& U,
const surfaceScalarField& alphaRhoPhi,
const surfaceScalarField& phi,
const phaseModel& transport,
const word& propertiesName = turbulenceModel::propertiesName,
const word& type = typeName
);
//- Destructor
virtual ~phasePressureModel();
// Member Functions
//- Re-read model coefficients if they have changed
virtual bool read();
//- Return the effective viscosity
virtual tmp<volScalarField> nuEff() const
{
return this->nut();
}
//- Return the effective viscosity on patch
virtual tmp<scalarField> nuEff(const label patchi) const
{
return this->nut(patchi);
}
//- Return the turbulence kinetic energy
virtual tmp<volScalarField> k() const;
//- Return the turbulence kinetic energy dissipation rate
virtual tmp<volScalarField> epsilon() const;
//- Return the Reynolds stress tensor
virtual tmp<volSymmTensorField> R() const;
//- Return the phase-pressure'
// (derivative of phase-pressure w.r.t. phase-fraction)
virtual tmp<volScalarField> pPrime() const;
//- Return the face-phase-pressure'
// (derivative of phase-pressure w.r.t. phase-fraction)
virtual tmp<surfaceScalarField> pPrimef() const;
//- Return the effective stress tensor
virtual tmp<volSymmTensorField> devRhoReff() const;
//- Return the source term for the momentum equation
virtual tmp<fvVectorMatrix> divDevRhoReff(volVectorField& U) const;
//- Solve the kinetic theory equations and correct the viscosity
virtual void correct();
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace RASModels
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
|
