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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::alphaContactAngleFvPatchScalarField
Description
Contact-angle boundary condition for multi-phase interface-capturing
simulations. Sets of coefficients are given for the contact angle with each
other phase. These coefficients can specify either a constant or a dynamic
contact angle.
Usage
\table
Property | Description | Required | Default value
theta0 | Equilibrium contact angle | yes |
uTheta | Velocity scale | no | none
thetaA | Limiting advancing contact angle | if uTheta | none
thetaR | Limiting receding contact angle | if uTheta | none
\endtable
Example of the boundary condition specification:
\verbatim
<patchName>
{
type alphaContactAngle;
contactAngleProperties
{
// Constant contact angle with air
air
{
theta0 90;
}
// Dynamic contact angle with water
oil
{
theta0 70;
uTheta 1;
thetaA 100;
thetaR 50;
}
}
value uniform 0;
}
\endverbatim
SourceFiles
alphaContactAngleFvPatchScalarField.C
\*---------------------------------------------------------------------------*/
#ifndef alphaContactAngleFvPatchScalarField_H
#define alphaContactAngleFvPatchScalarField_H
#include "zeroGradientFvPatchFields.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class alphaContactAngleFvPatchScalarField Declaration
\*---------------------------------------------------------------------------*/
class alphaContactAngleFvPatchScalarField
:
public zeroGradientFvPatchScalarField
{
public:
class contactAngleProperties
{
// Private Data
//- Equilibrium contact angle
scalar theta0_;
//- Is this contact angle dynamic?
bool dynamic_;
//- Dynamic contact angle velocity scale
scalar uTheta_;
//- Limiting advancing contact angle
scalar thetaA_;
//- Limiting receding contact angle
scalar thetaR_;
public:
// Constructors
//- Construct null
contactAngleProperties();
//- Construct non-dynamic properties from components
contactAngleProperties(const scalar theta0);
//- Construct dynamic properties from components
contactAngleProperties
(
const scalar theta0,
const scalar uTheta,
const scalar thetaA,
const scalar thetaR
);
//- Construct from a dictionary
contactAngleProperties(const dictionary& dict);
// Member Functions
// Access
//- Return the equilibrium contact angle theta0
inline scalar theta0() const
{
return theta0_;
}
//- Return if this contact angle is dynamic
inline bool dynamic() const
{
return dynamic_;
}
//- Return the dynamic contact angle velocity scale
inline scalar uTheta() const
{
return uTheta_;
}
//- Return the limiting advancing contact angle
inline scalar thetaA() const
{
return thetaA_;
}
//- Return the limiting receding contact angle
inline scalar thetaR() const
{
return thetaR_;
}
//- Return the contact angle properties for the reverse of this
// interface (e.g., convert air_water to water_air).
contactAngleProperties reversed() const;
//- Write to stream
void write(Ostream& os) const;
// Member operators
//- Check equality between two sets of contact angle properties
bool operator==(const contactAngleProperties& thetaProps) const;
//- Check inequality between two sets of contact angle properties
bool operator!=(const contactAngleProperties& thetaProps) const;
};
private:
// Private Data
//- Table of contact angle properties
HashTable<contactAngleProperties> thetaProps_;
public:
//- Runtime type information
TypeName("alphaContactAngle");
// Constructors
//- Construct from patch, internal field and dictionary
alphaContactAngleFvPatchScalarField
(
const fvPatch&,
const DimensionedField<scalar, fvMesh>&,
const dictionary&
);
//- Construct by mapping given alphaContactAngleFvPatchScalarField
// onto a new patch
alphaContactAngleFvPatchScalarField
(
const alphaContactAngleFvPatchScalarField&,
const fvPatch&,
const DimensionedField<scalar, fvMesh>&,
const fieldMapper&
);
//- Construct as copy setting internal field reference
alphaContactAngleFvPatchScalarField
(
const alphaContactAngleFvPatchScalarField&,
const DimensionedField<scalar, fvMesh>&
);
//- Construct and return a clone setting internal field reference
virtual tmp<fvPatchScalarField> clone
(
const DimensionedField<scalar, fvMesh>& iF
) const
{
return tmp<fvPatchScalarField>
(
new alphaContactAngleFvPatchScalarField(*this, iF)
);
}
// Member Functions
//- Return the contact angle properties
const HashTable<contactAngleProperties>& thetaProps() const
{
return thetaProps_;
}
//- Write
virtual void write(Ostream&) const;
// Member Operators
//- Inherit assignment
using zeroGradientFvPatchScalarField::operator=;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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