165 lines
4.6 KiB
C++
165 lines
4.6 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2011-2015 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::threePhaseInterfaceProperties
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Description
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Properties to aid interFoam :
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1. Correct the alpha boundary condition for dynamic contact angle.
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2. Calculate interface curvature.
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SourceFiles
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threePhaseInterfaceProperties.C
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\*---------------------------------------------------------------------------*/
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#ifndef threePhaseInterfaceProperties_H
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#define threePhaseInterfaceProperties_H
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#include "incompressibleThreePhaseMixture.H"
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#include "surfaceFields.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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/*---------------------------------------------------------------------------*\
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Class threePhaseInterfaceProperties Declaration
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\*---------------------------------------------------------------------------*/
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class threePhaseInterfaceProperties
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{
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// Private data
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const incompressibleThreePhaseMixture& mixture_;
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//- Compression coefficient
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scalar cAlpha_;
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//- Surface tension 1-2
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dimensionedScalar sigma12_;
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//- Surface tension 1-3
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dimensionedScalar sigma13_;
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//- Stabilisation for normalisation of the interface normal
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const dimensionedScalar deltaN_;
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surfaceScalarField nHatf_;
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volScalarField K_;
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// Private Member Functions
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//- Disallow default bitwise copy construct and assignment
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threePhaseInterfaceProperties(const threePhaseInterfaceProperties&);
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void operator=(const threePhaseInterfaceProperties&);
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//- Correction for the boundary condition on the unit normal nHat on
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// walls to produce the correct contact dynamic angle
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// calculated from the component of U parallel to the wall
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void correctContactAngle
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(
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surfaceVectorField::GeometricBoundaryField& nHat
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) const;
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//- Re-calculate the interface curvature
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void calculateK();
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public:
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//- Conversion factor for degrees into radians
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static const scalar convertToRad;
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// Constructors
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//- Construct from volume fraction field alpha and IOdictionary
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threePhaseInterfaceProperties
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(
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const incompressibleThreePhaseMixture& mixture
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);
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// Member Functions
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scalar cAlpha() const
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{
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return cAlpha_;
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}
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const dimensionedScalar& deltaN() const
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{
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return deltaN_;
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}
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const surfaceScalarField& nHatf() const
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{
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return nHatf_;
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}
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const volScalarField& K() const
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{
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return K_;
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}
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tmp<volScalarField> sigma() const
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{
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volScalarField limitedAlpha2(max(mixture_.alpha2(), scalar(0)));
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volScalarField limitedAlpha3(max(mixture_.alpha3(), scalar(0)));
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return
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(limitedAlpha2*sigma12_ + limitedAlpha3*sigma13_)
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/(limitedAlpha2 + limitedAlpha3 + SMALL);
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}
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tmp<volScalarField> sigmaK() const
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{
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return sigma()*K_;
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}
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tmp<surfaceScalarField> surfaceTensionForce() const;
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//- Indicator of the proximity of the interface
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// Field values are 1 near and 0 away for the interface.
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tmp<volScalarField> nearInterface() const;
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void correct()
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{
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calculateK();
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}
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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