phaseHydrostaticPressureFvPatchScalarField.H

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License
    This file is part of OpenFOAM.
 
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    for more details.
 
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Class
    Foam::phaseHydrostaticPressureFvPatchScalarField
 
Group
    grpGenericBoundaryConditions
 
Description
    This boundary condition provides a phase-based hydrostatic pressure
    condition, calculated as:
 
        \f[
            p_{hyd} = p_{ref} + \rho g (x - x_{ref})
        \f]
 
    where
    \vartable
        p_{hyd} | hyrostatic pressure [Pa]
        p_{ref} | reference pressure [Pa]
        x_{ref} | reference point in Cartesian coordinates
        \rho    | density (assumed uniform)
        g       | acceleration due to gravity [m/s2]
    \endtable
 
    The values are assigned according to the phase-fraction field:
    - 1: apply \f$p_{hyd}\f$
    - 0: apply a zero-gradient condition
 
Usage
    \table
        Property      | Description                 | Required | Default value
        phaseFraction | phase-fraction field name   | no       | alpha
        rho           | density field name          | no       | rho
        pRefValue     | reference pressure [Pa]     | yes      |
        pRefPoint     | reference pressure location | yes      |
    \endtable
 
    Example of the boundary condition specification:
    \verbatim
    <patchName>
    {
        type            phaseHydrostaticPressure;
        phaseFraction   alpha1;
        rho             rho;
        pRefValue       1e5;
        pRefPoint       (0 0 0);
        value           uniform 0; // optional initial value
    }
    \endverbatim
 
See also
    Foam::mixedFvPatchScalarField
 
SourceFiles
    phaseHydrostaticPressureFvPatchScalarField.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef phaseHydrostaticPressureFvPatchScalarField_H
#define phaseHydrostaticPressureFvPatchScalarField_H
 
#include "mixedFvPatchFields.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
         Class phaseHydrostaticPressureFvPatchScalarField Declaration
\*---------------------------------------------------------------------------*/
 
class phaseHydrostaticPressureFvPatchScalarField
:
    public mixedFvPatchScalarField
{
 
protected:
 
    // Protected data
 
        //- Name of phase-fraction field
        word phaseFraction_;
 
        //- Constant density in the far-field
        scalar rho_;
 
        //- Reference pressure
        scalar pRefValue_;
 
        //- Reference pressure location
        vector pRefPoint_;
 
 
public:
 
    //- Runtime type information
    TypeName("phaseHydrostaticPressure");
 
 
    // Constructors
 
        //- Construct from patch and internal field
        phaseHydrostaticPressureFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&
        );
 
        //- Construct from patch, internal field and dictionary
        phaseHydrostaticPressureFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const dictionary&
        );
 
        //- Construct by mapping given
        //  phaseHydrostaticPressureFvPatchScalarField onto a new patch
        phaseHydrostaticPressureFvPatchScalarField
        (
            const phaseHydrostaticPressureFvPatchScalarField&,
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const fvPatchFieldMapper&
        );
 
        //- Construct as copy
        phaseHydrostaticPressureFvPatchScalarField
        (
            const phaseHydrostaticPressureFvPatchScalarField&
        );
 
        //- Construct and return a clone
        virtual tmp<fvPatchScalarField> clone() const
        {
            return tmp<fvPatchScalarField>
            (
                new phaseHydrostaticPressureFvPatchScalarField(*this)
            );
        }
 
        //- Construct as copy setting internal field reference
        phaseHydrostaticPressureFvPatchScalarField
        (
            const phaseHydrostaticPressureFvPatchScalarField&,
            const DimensionedField<scalar, volMesh>&
        );
 
        //- Construct and return a clone setting internal field reference
        virtual tmp<fvPatchScalarField> clone
        (
            const DimensionedField<scalar, volMesh>& iF
        ) const
        {
            return tmp<fvPatchScalarField>
            (
                new phaseHydrostaticPressureFvPatchScalarField(*this, iF)
            );
        }
 
 
    // Member functions
 
        // Attributes
 
            //- Return true: this patch field is altered by assignment
            virtual bool assignable() const
            {
                return true;
            }
 
 
        // Access
 
            //- Return the phaseFraction
            const word& phaseFraction() const
            {
                return phaseFraction_;
            }
 
            //- Return reference to the phaseFraction to allow adjustment
            word& phaseFraction()
            {
                return phaseFraction_;
            }
 
            //- Return the constant density in the far-field
            scalar rho() const
            {
                return rho_;
            }
 
            //- Return reference to the constant density in the far-field
            //  to allow adjustment
            scalar& rho()
            {
                return rho_;
            }
 
            //- Return the reference pressure
            scalar pRefValue() const
            {
                return pRefValue_;
            }
 
            //- Return reference to the reference pressure to allow adjustment
            scalar& pRefValue()
            {
                return pRefValue_;
            }
 
            //- Return the pressure reference location
            const vector& pRefPoint() const
            {
                return pRefPoint_;
            }
 
            //- Return reference to the pressure reference location
            //  to allow adjustment
            vector& pRefPoint()
            {
                return pRefPoint_;
            }
 
 
        //- Update the coefficients associated with the patch field
        virtual void updateCoeffs();
 
        //- Write
        virtual void write(Ostream&) const;
 
 
    // Member operators
 
        virtual void operator=(const fvPatchScalarField& pvf);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //