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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
-------------------------------------------------------------------------------
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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::waveTransmissiveFvPatchField
This boundary condition provides a wave transmissive outflow condition,
based on solving DDt(W, field) = 0 at the boundary \c W is the wave velocity
and \c field is the field to which this boundary condition is applied.
The wave speed is calculated using:
\f[
w_p = \frac{\phi_p}{|Sf|} + \sqrt{\frac{\gamma}{\psi_p}}
w_p | patch wave speed
\phi_p | patch face flux
\psi_p | patch compressibility
Sf | patch face area vector
\gamma | ratio of specific heats
Henry Weller
committed
Usage
Property | Description | Required | Default value
phi | flux field name | no | phi
rho | density field name | no | rho
Henry Weller
committed
psi | compressibility field name | no | thermo:psi
gamma | ratio of specific heats (Cp/Cv) | yes |
Example of the boundary condition specification:
\verbatim
{
type waveTransmissive;
phi phi;
psi psi;
gamma 1.4;
}
\endverbatim
SourceFiles
waveTransmissiveFvPatchField.C
\*---------------------------------------------------------------------------*/
#ifndef waveTransmissiveFvPatchField_H
#define waveTransmissiveFvPatchField_H
#include "advectiveFvPatchFields.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class waveTransmissiveFvPatchField Declaration
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\*---------------------------------------------------------------------------*/
template<class Type>
class waveTransmissiveFvPatchField
:
public advectiveFvPatchField<Type>
{
// Private data
//- Name of the compressibility field used to calculate the wave speed
word psiName_;
//- Heat capacity ratio
scalar gamma_;
public:
//- Runtime type information
TypeName("waveTransmissive");
// Constructors
//- Construct from patch and internal field
waveTransmissiveFvPatchField
(
const fvPatch&,
const DimensionedField<Type, volMesh>&
);
//- Construct from patch, internal field and dictionary
waveTransmissiveFvPatchField
(
const fvPatch&,
const DimensionedField<Type, volMesh>&,
const dictionary&
);
//- Construct by mapping given waveTransmissiveFvPatchField
// onto a new patch
waveTransmissiveFvPatchField
(
const waveTransmissiveFvPatchField<Type>&,
const fvPatch&,
const DimensionedField<Type, volMesh>&,
const fvPatchFieldMapper&
);
//- Construct as copy
waveTransmissiveFvPatchField
(
const waveTransmissiveFvPatchField&
);
//- Construct and return a clone
Henry Weller
committed
virtual tmp<fvPatchField<Type>> clone() const
Henry Weller
committed
return tmp<fvPatchField<Type>>
(
new waveTransmissiveFvPatchField<Type>(*this)
);
}
//- Construct as copy setting internal field reference
waveTransmissiveFvPatchField
(
const waveTransmissiveFvPatchField&,
const DimensionedField<Type, volMesh>&
);
//- Construct and return a clone setting internal field reference
Henry Weller
committed
virtual tmp<fvPatchField<Type>> clone
(
const DimensionedField<Type, volMesh>& iF
) const
{
Henry Weller
committed
return tmp<fvPatchField<Type>>
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(
new waveTransmissiveFvPatchField<Type>(*this, iF)
);
}
// Member functions
// Access
//- Return the heat capacity ratio
scalar gamma() const
{
return gamma_;
}
//- Return reference to the heat capacity ratio to allow adjustment
scalar& gamma()
{
return gamma_;
}
// Evaluation functions
//- Calculate and return the advection speed at the boundary
virtual tmp<scalarField> advectionSpeed() const;
//- Write
virtual void write(Ostream&) const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#ifdef NoRepository
#include "waveTransmissiveFvPatchField.C"
#endif
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //