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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\/ 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.
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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::porousBafflePressureFvPatchField
Group
grpCoupledBoundaryConditions
This boundary condition provides a jump condition, using the \c cyclic
condition as a base.
The porous baffle introduces a pressure jump defined by:
\f[
\Delta p = -(D \mu U + 0.5 I \rho |U|^2 )L
\f]
where
\vartable
p | pressure [Pa]
\rho | density [kg/m3]
\mu | laminar viscosity [Pa s]
L | porous media length in the flow direction
\endvartable
\heading Patch usage
\table
Property | Description | Required | Default value
patchType | underlying patch type should be \c cyclic| yes |
phi | flux field name | no | phi
rho | density field name | no | rho
D | Darcy coefficient | yes |
I | inertial coefficient | yes |
length | porous media length in the flow direction | yes |
\endtable
Example of the boundary condition specification:
\verbatim
myPatch
{
type porousBafflePressure;
patchType cyclic;
jump uniform 0;
D 0.001;
I 1000000;
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value uniform 0;
}
\endverbatim
Note
The underlying \c patchType should be set to \c cyclic
SourceFiles
porousBafflePressureFvPatchField.C
\*---------------------------------------------------------------------------*/
#ifndef porousBafflePressureFvPatchField_H
#define porousBafflePressureFvPatchField_H
#include "fixedJumpFvPatchField.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class porousBafflePressureFvPatchField Declaration
\*---------------------------------------------------------------------------*/
class porousBafflePressureFvPatchField
:
public fixedJumpFvPatchField<scalar>
{
// Private data
//- Name of flux field (default = phi)
const word phiName_;
//- Name of density field (default = rho)
const word rhoName_;
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//- Darcy pressure loss coefficient
scalar D_;
//- Inertia pressure lost coefficient
scalar I_;
//- Porous media length
scalar length_;
public:
//- Runtime type information
TypeName("porousBafflePressure");
// Constructors
//- Construct from patch and internal field
porousBafflePressureFvPatchField
(
const fvPatch&,
const DimensionedField<scalar, volMesh>&
);
//- Construct from patch, internal field and dictionary
porousBafflePressureFvPatchField
(
const fvPatch&,
const DimensionedField<scalar, volMesh>&,
const dictionary&
);
//- Construct by mapping given porousBafflePressureFvPatchField
// onto a new patch
porousBafflePressureFvPatchField
(
const porousBafflePressureFvPatchField&,
const fvPatch&,
const DimensionedField<scalar, volMesh>&,
const fvPatchFieldMapper&
);
//- Construct as copy
porousBafflePressureFvPatchField
(
const porousBafflePressureFvPatchField&
);
//- Construct and return a clone
virtual tmp<fvPatchField<scalar> > clone() const
{
return tmp<fvPatchField<scalar> >
(
new porousBafflePressureFvPatchField(*this)
);
}
//- Construct as copy setting internal field reference
porousBafflePressureFvPatchField
(
const porousBafflePressureFvPatchField&,
const DimensionedField<scalar, volMesh>&
);
//- Construct and return a clone setting internal field reference
virtual tmp<fvPatchField<scalar> > clone
(
const DimensionedField<scalar, volMesh>& iF
) const
{
return tmp<fvPatchField<scalar> >
(
new porousBafflePressureFvPatchField(*this, iF)
);
}
// Member functions
// Evaluation functions
//- Update the coefficients associated with the patch field
virtual void updateCoeffs();
//- Write
virtual void write(Ostream&) const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //