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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::interfaceProperties
Description
Contains the interface properties. Surface tension, interface curvature,
and functionality to correct alpha contact angle boundary conditions.
SourceFiles
interfaceProperties.C
\*---------------------------------------------------------------------------*/
#ifndef interfaceProperties_H
#define interfaceProperties_H
#include "IOdictionary.H"
#include "surfaceTensionModel.H"
#include "volFields.H"
#include "surfaceFields.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class interfaceProperties Declaration
\*---------------------------------------------------------------------------*/
class interfaceProperties
{
// Private Data
//- Keep a reference to the phaseProperties dictionary
const dictionary& phasePropertiesDict_;
//- Volume fraction of phase 1
volScalarField& alpha1_;
//- Volume fraction of phase 2
volScalarField& alpha2_;
//- Mixture velocity
const volVectorField& U_;
//- Surface tension
autoPtr<surfaceTensionModel> sigmaPtr_;
//- Stabilisation for normalisation of the interface normal
const dimensionedScalar deltaN_;
//- ...
surfaceScalarField nHatf_;
//- ...
volScalarField K_;
// Private Member Functions
//- Correction for the boundary condition on the unit normal nHat on
// walls to produce the correct contact dynamic angle
// calculated from the component of U parallel to the wall
void correctContactAngle
(
surfaceVectorField::BoundaryField& nHat,
const surfaceVectorField::BoundaryField& gradAlphaf
);
//- Re-calculate the interface curvature
void calculateK();
public:
// Constructors
//- Construct from dictionary, volume fraction fields and mixture
// velocity
interfaceProperties
(
const IOdictionary& dict,
volScalarField& alpha1,
volScalarField& alpha2,
const volVectorField& U
);
//- Disallow default bitwise copy construction
interfaceProperties(const interfaceProperties&) = delete;
//- Destructor
virtual ~interfaceProperties()
{}
// Member Functions
inline const volVectorField& U() const
{
return U_;
}
const dimensionedScalar& deltaN() const
{
return deltaN_;
}
const surfaceScalarField& nHatf() const
{
return nHatf_;
}
tmp<volVectorField> n() const;
tmp<volScalarField> sigmaK() const;
tmp<surfaceScalarField> surfaceTensionForce() const;
//- Indicator of the proximity of the interface
// Field values are 1 near and 0 away from the interface.
tmp<volScalarField> nearInterface() const;
//- Correct the curvature
void correct();
//- Read phaseProperties dictionary
bool read();
// Member Operators
//- Disallow default bitwise assignment
void operator=(const interfaceProperties&) = delete;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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