203 lines
5.6 KiB
C++
203 lines
5.6 KiB
C++
/*---------------------------------------------------------------------------*\
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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 | www.openfoam.com
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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Copyright (C) 2013-2016 OpenFOAM Foundation
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Copyright (C) 2020 OpenCFD Ltd.
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::phasePressureModel
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Description
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Particle-particle phase-pressure RAS model
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The derivative of the phase-pressure with respect to the phase-fraction
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is evaluated as
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g0*min(exp(preAlphaExp*(alpha - alphaMax)), expMax)
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The default model coefficients correspond to the following:
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\verbatim
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phasePressureCoeffs
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{
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preAlphaExp 500;
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expMax 1000;
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alphaMax 0.62;
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g0 1000;
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}
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\endverbatim
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SourceFiles
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phasePressureModel.C
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\*---------------------------------------------------------------------------*/
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#ifndef phasePressureModel_H
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#define phasePressureModel_H
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#include "RASModel.H"
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#include "eddyViscosity.H"
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#include "PhaseCompressibleTurbulenceModel.H"
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#include "ThermalDiffusivity.H"
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#include "EddyDiffusivity.H"
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#include "phaseModel.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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namespace RASModels
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{
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/*---------------------------------------------------------------------------*\
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Class phasePressureModel Declaration
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\*---------------------------------------------------------------------------*/
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class phasePressureModel
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:
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public eddyViscosity
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<
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RASModel<EddyDiffusivity<ThermalDiffusivity
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<
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PhaseCompressibleTurbulenceModel<phaseModel>
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>>>
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>
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{
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// Private data
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// Input Fields
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const phaseModel& phase_;
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// Kinetic Theory Model coefficients
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//- Maximum packing phase-fraction
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scalar alphaMax_;
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//- Pre-exponential factor
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scalar preAlphaExp_;
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//- Maximum limit of the exponential
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scalar expMax_;
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//- g0
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dimensionedScalar g0_;
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// Private Member Functions
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void correctNut()
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{}
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//- No copy construct
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phasePressureModel(const phasePressureModel&) = delete;
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//- No copy assignment
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void operator=(const phasePressureModel&) = delete;
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public:
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//- Runtime type information
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TypeName("phasePressure");
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// Constructors
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//- Construct from components
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phasePressureModel
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(
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const volScalarField& alpha,
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const volScalarField& rho,
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const volVectorField& U,
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const surfaceScalarField& alphaRhoPhi,
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const surfaceScalarField& phi,
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const phaseModel& transport,
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const word& propertiesName = turbulenceModel::propertiesName,
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const word& type = typeName
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);
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//- Destructor
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virtual ~phasePressureModel() = default;
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// Member Functions
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//- Re-read model coefficients if they have changed
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virtual bool read();
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//- Return the effective viscosity
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virtual tmp<volScalarField> nuEff() const
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{
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return this->nut();
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}
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//- Return the effective viscosity on patch
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virtual tmp<scalarField> nuEff(const label patchi) const
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{
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return this->nut(patchi);
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}
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//- Return the turbulence kinetic energy
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virtual tmp<volScalarField> k() const;
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//- Return the turbulence kinetic energy dissipation rate
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virtual tmp<volScalarField> epsilon() const;
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//- Return the specific dissipation rate
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virtual tmp<volScalarField> omega() const;
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//- Return the Reynolds stress tensor
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virtual tmp<volSymmTensorField> R() const;
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//- Return the phase-pressure'
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// (derivative of phase-pressure w.r.t. phase-fraction)
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virtual tmp<volScalarField> pPrime() const;
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//- Return the face-phase-pressure'
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// (derivative of phase-pressure w.r.t. phase-fraction)
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virtual tmp<surfaceScalarField> pPrimef() const;
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//- Return the effective stress tensor
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virtual tmp<volSymmTensorField> devRhoReff() const;
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//- Return the source term for the momentum equation
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virtual tmp<fvVectorMatrix> divDevRhoReff(volVectorField& U) const;
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//- Solve the kinetic theory equations and correct the viscosity
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virtual void correct();
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace RASModels
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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