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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::contactAngleFvPatchScalarField
Description
General alpha contact angle boundary condition.
The essential entry "limit" controls the gradient of alpha1 on the wall:
- none - Calculate the gradient from the contact-angle without limiter
- gradient - Limit the wall-gradient such that alpha1 remains bounded
on the wall
- alpha - Bound the calculated alpha1 on the wall
- zeroGradient - Set the gradient of alpha1 to 0 on the wall, i.e.
reproduce previous behaviour, the pressure BCs can be left as before.
Note that if any of the first three options are used the boundary condition
on \c p_rgh must set to guarantee that the flux is corrected to be zero at
the wall.
Usage
\table
Property | Description | Required | Default value
limit | Limiting option | yes |
contantAngle | Contact angle model settings | no | none
\endtable
Example of the boundary condition specification for a constant angle:
\verbatim
<patchName>
{
type contactAngle;
limit none;
contactAngle
{
type constant;
theta0 70;
}
}
\endverbatim
If the contactAngle sub-dictionary is not given, a constant angle will be
assumed. Example:
\verbatim
<patchName>
{
type contactAngle;
limit none;
theta0 70;
}
\endverbatim
See also
Foam::contactAngleModel
Foam::contactAngleModels::constant
Foam::contactAngleModels::dynamic
SourceFiles
contactAngleFvPatchScalarField.C
\*---------------------------------------------------------------------------*/
#ifndef contactAngleFvPatchScalarField_H
#define contactAngleFvPatchScalarField_H
#include "fixedGradientFvPatchFields.H"
#include "contactAngleModel.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class contactAngleFvPatchScalarField Declaration
\*---------------------------------------------------------------------------*/
class contactAngleFvPatchScalarField
:
public fixedGradientFvPatchScalarField
{
public:
// Public Enumerations
//- Alpha limit options
enum limitControls
{
lcNone,
lcGradient,
lcZeroGradient,
lcAlpha
};
//- Alpha limit option names
static const NamedEnum<limitControls, 4> limitControlNames_;
private:
// Private Data
//- Equilibrium contact angle function
autoPtr<contactAngleModel> contactAngle_;
//- Alpha limiting option
limitControls limit_;
public:
//- Runtime type information
TypeName("contactAngle");
// Constructors
//- Construct from patch, internal field and dictionary
contactAngleFvPatchScalarField
(
const fvPatch&,
const DimensionedField<scalar, fvMesh>&,
const dictionary&
);
//- Construct by mapping given contactAngleFvPatchScalarField
// onto a new patch
contactAngleFvPatchScalarField
(
const contactAngleFvPatchScalarField&,
const fvPatch&,
const DimensionedField<scalar, fvMesh>&,
const fieldMapper&
);
//- Disallow copy without setting internal field reference
contactAngleFvPatchScalarField
(
const contactAngleFvPatchScalarField&
) = delete;
//- Copy constructor setting internal field reference
contactAngleFvPatchScalarField
(
const contactAngleFvPatchScalarField&,
const DimensionedField<scalar, fvMesh>&
);
// Member Functions
//- Return the cosine of the contact angle
tmp<scalarField> cosTheta
(
const fvPatchVectorField& Up,
const vectorField& nHat
) const;
//- Evaluate the patch field
virtual void evaluate
(
const Pstream::commsTypes commsType=Pstream::commsTypes::blocking
);
//- Write
virtual void write(Ostream&) const;
// Member Operators
//- Inherit assignment
using fixedGradientFvPatchScalarField::operator=;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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