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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2011-2026 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::zeroGradientFvPatchField
Description
This boundary condition applies a zero-gradient condition from the patch
internal field onto the patch faces.
Usage
Example of the boundary condition specification:
\verbatim
<patchName>
{
type zeroGradient;
}
\endverbatim
SourceFiles
zeroGradientFvPatchField.C
\*---------------------------------------------------------------------------*/
#ifndef zeroGradientFvPatchField_H
#define zeroGradientFvPatchField_H
#include "fvPatchField.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class zeroGradientFvPatchField Declaration
\*---------------------------------------------------------------------------*/
template<class Type>
class zeroGradientFvPatchField
:
public fvPatchField<Type>
{
public:
//- Runtime type information
TypeName("zeroGradient");
// Constructors
//- Construct from patch and internal field
zeroGradientFvPatchField
(
const fvPatch&,
const DimensionedField<Type, fvMesh>&
);
//- Construct from patch, internal field and dictionary
zeroGradientFvPatchField
(
const fvPatch&,
const DimensionedField<Type, fvMesh>&,
const dictionary&
);
//- Construct by mapping the given zeroGradientFvPatchField<Type>
// onto a new patch
zeroGradientFvPatchField
(
const zeroGradientFvPatchField<Type>&,
const fvPatch&,
const DimensionedField<Type, fvMesh>&,
const fieldMapper&
);
//- Disallow copy without setting internal field reference
zeroGradientFvPatchField
(
const zeroGradientFvPatchField<Type>&
) = delete;
//- Copy constructor setting internal field reference
zeroGradientFvPatchField
(
const zeroGradientFvPatchField<Type>&,
const DimensionedField<Type, fvMesh>&
);
//- Construct and return a clone setting internal field reference
virtual tmp<fvPatchField<Type>> clone
(
const DimensionedField<Type, fvMesh>& iF
) const
{
return tmp<fvPatchField<Type>>
(
new zeroGradientFvPatchField<Type>(*this, iF)
);
}
// Member Functions
using fvPatchField<Type>::patchInternalField;
// Mapping functions
//- Map the given fvPatchField onto this fvPatchField
virtual void map(const fvPatchField<Type>&, const fieldMapper&);
// Evaluation functions
//- Return gradient at boundary
virtual tmp<Field<Type>> snGrad() const
{
return tmp<Field<Type>>
(
new Field<Type>(this->size(), Zero)
);
}
//- Evaluate the patch field
virtual void evaluate
(
const Pstream::commsTypes commsType =
Pstream::commsTypes::blocking
);
//- Return the matrix diagonal coefficients corresponding to the
// evaluation of the value of this patchField with given weights
virtual tmp<Field<Type>> valueInternalCoeffs
(
const tmp<scalarField>&
) const;
//- Return the matrix source coefficients corresponding to the
// evaluation of the value of this patchField with given weights
virtual tmp<Field<Type>> valueBoundaryCoeffs
(
const tmp<scalarField>&
) const;
//- Return the matrix diagonal coefficients corresponding to the
// evaluation of the gradient of this patchField
virtual tmp<Field<Type>> gradientInternalCoeffs() const;
//- Return the matrix source coefficients corresponding to the
// evaluation of the gradient of this patchField
virtual tmp<Field<Type>> gradientBoundaryCoeffs() const;
// Member Operators
//- Inherit assignment
using fvPatchField<Type>::operator=;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#ifdef NoRepository
#include "zeroGradientFvPatchField.C"
#endif
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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