contactAngleFvPatchScalarField.H

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/*---------------------------------------------------------------------------*\
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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.
 
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    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 e.g.:
 
    \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
{
    // Private Data
 
        //- Equilibrium contact angle function
        autoPtr<contactAngleModel> contactAngle_;
 
 
public:
 
    //- Runtime type information
    TypeName("contactAngle");
 
    //- Alpha limit options
    enum limitControls
    {
        lcNone,
        lcGradient,
        lcZeroGradient,
        lcAlpha
    };
 
    static const NamedEnum<limitControls, 4> limitControlNames_;
    limitControls limit_;
 
    // Constructors
 
        //- Construct from patch, internal field and dictionary
        contactAngleFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const dictionary&
        );
 
        //- Construct by mapping given contactAngleFvPatchScalarField
        //  onto a new patch
        contactAngleFvPatchScalarField
        (
            const contactAngleFvPatchScalarField&,
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const fvPatchFieldMapper&
        );
 
        //- Disallow copy without setting internal field reference
        contactAngleFvPatchScalarField
        (
            const contactAngleFvPatchScalarField&
        ) = delete;
 
        //- Copy constructor setting internal field reference
        contactAngleFvPatchScalarField
        (
            const contactAngleFvPatchScalarField&,
            const DimensionedField<scalar, volMesh>&
        );
 
 
    // 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;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //