OpenFOAM-4.x-lab/src/fvOptions/sources/derived/buoyancyForce/buoyancyForce.H
Henry Weller 56913f6307 fvOptions: New buoyancyForce and buoyancyEnergy
Provides run-time selection of buoyancy sources for compressible solvers

Replaces the built-in buoyancy sources in XiFoam, reactingFoam and
rhoReactingFoam.

e.g. in constant/fvOptions specify

momentumSource
{
    type            buoyancyForce;

    buoyancyForceCoeffs
    {
        fieldNames      (U);
    }
}

and optionally specify the buoyancy energy source in the enthalpy
equation:

energySource
{
    type            buoyancyEnergy;

    buoyancyEnergyCoeffs
    {
        fieldNames      (h);
    }
}

or internal energy equation

energySource
{
    type            buoyancyEnergy;

    buoyancyEnergyCoeffs
    {
        fieldNames      (e);
    }
}
2015-11-23 09:29:10 +00:00

127 lines
3.3 KiB
C++

/*---------------------------------------------------------------------------*\
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Class
Foam::fv::buoyancyForce
Description
Calculates and applies the buoyancy force rho*g to the momentum equation
corresponding to the specified velocity field.
\heading Source usage
Example usage:
\verbatim
buoyancyForceCoeffs
{
fieldNames (U); // Name of velocity field
}
\endverbatim
SourceFiles
buoyancyForce.C
\*---------------------------------------------------------------------------*/
#ifndef buoyancyForce_H
#define buoyancyForce_H
#include "fvOption.H"
#include "uniformDimensionedFields.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace fv
{
/*---------------------------------------------------------------------------*\
Class buoyancyForce Declaration
\*---------------------------------------------------------------------------*/
class buoyancyForce
:
public option
{
// Private data
uniformDimensionedVectorField g_;
// Private Member Functions
//- Disallow default bitwise copy construct
buoyancyForce(const buoyancyForce&);
//- Disallow default bitwise assignment
void operator=(const buoyancyForce&);
public:
//- Runtime type information
TypeName("buoyancyForce");
// Constructors
//- Construct from explicit source name and mesh
buoyancyForce
(
const word& sourceName,
const word& modelType,
const dictionary& dict,
const fvMesh& mesh
);
// Member Functions
// Evaluate
//- Add explicit contribution to compressible momentum equation
virtual void addSup
(
const volScalarField& rho,
fvMatrix<vector>& eqn,
const label fieldI
);
// IO
//- Read source dictionary
virtual bool read(const dictionary& dict);
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace fv
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //