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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2021-2026 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::fv::coefficientMassTransfer
Description
This simple model generates a mass transfer between two phases calculated
from the following expression:
\f[
\dot{m}/V = C \alpha \grad \alpha
\f]
\vartable
\dot{m}/V | mass transfer rate per unit volume
C | coefficient
\alpha | volume fraction of the source phase
\endvartable
Usage
Example usage:
\verbatim
coefficientMassTransfer
{
type coefficientMassTransfer;
phases (liquid vapour);
C [kg/m^2/s] 0.1;
}
\endverbatim
SourceFiles
coefficientMassTransfer.C
\*---------------------------------------------------------------------------*/
#ifndef coefficientMassTransfer_H
#define coefficientMassTransfer_H
#include "massTransfer.H"
#include "Function1.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace fv
{
/*---------------------------------------------------------------------------*\
Class coefficientMassTransfer Declaration
\*---------------------------------------------------------------------------*/
class coefficientMassTransfer
:
public massTransfer
{
private:
// Private Data
//- Mass flow rate coefficient. Multiplies the estimated interfacial
// area density return the mass transfer rate. Units of [kg/m^2/s].
dimensionedScalar C_;
// Private Member Functions
//- Non-virtual read
void readCoeffs(const dictionary& dict);
public:
//- Runtime type information
TypeName("coefficientMassTransfer");
// Constructors
//- Construct from explicit source name and mesh
coefficientMassTransfer
(
const word& name,
const word& modelType,
const fvMesh& mesh,
const dictionary& dict
);
// Member Functions
// Sources
//- Return the mass transfer rate
virtual tmp<DimensionedField<scalar, fvMesh>> mDot() const;
//- Override the incompressible continuity equation to add
// linearisation w.r.t alpha
void addSup
(
const volScalarField& alpha,
fvMatrix<scalar>& eqn
) const;
//- Override the compressible continuity equation to add
// linearisation w.r.t alpha
void addSup
(
const volScalarField& alpha,
const volScalarField& rho,
fvMatrix<scalar>& eqn
) const;
//- Read source dictionary
virtual bool read(const dictionary& dict);
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace fv
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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