fanPressureJumpFvPatchScalarField.H

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License
    This file is part of OpenFOAM.
 
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Class
    Foam::fanPressureJumpFvPatchScalarField
 
Description
    This boundary condition provides a fan pressure jump condition, using the
    \c cyclic condition as a base. The jump is specified as a \c Function1,
    which returns the pressure jump as a function of the total volumetric flow
    rate through the patch.
 
    A backwards-compatibility option is also provided to specify the pressure
    jump as a function of local velocity. In this mode the boundary condition
    serves as a direct replacement for the old fanFvPatchField.
 
Usage
    \table
        Property     | Description             | Required    | Default value
        patchType    | underlying patch type (should be \c cyclic) | yes |
        fanCurve     | fan curve function      | yes         |
        jumpTable    | jump table function (backward compatibility mode) | no |
        reverse      | reverse jump direction  | no          | false
        phi          | flux field name         | no          | phi
        rho          | density field name      | no          | rho
    \endtable
 
    Example of the boundary condition specification:
    \verbatim
    <patchName>
    {
        type            fanPressureJump;
        patchType       cyclic;
 
        fanCurve        table;
        file            "$FOAM_CASE/constant/pressureVsQ";
        format          csv;
        nHeaderLine     1;
        columns         (0 1);
        separator       ",";
        mergeSeparators no;
        outOfBounds     clamp;
        interpolationScheme linear;
 
        value           uniform 0;
    }
    \endverbatim
 
See also
    Foam::Function1s
 
SourceFiles
    fanPressureJumpFvPatchScalarField.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef fanPressureJumpFvPatchScalarField_H
#define fanPressureJumpFvPatchScalarField_H
 
#include "fixedJumpFvPatchFields.H"
#include "Function1.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
              Class fanPressureJumpFvPatchScalarField Declaration
\*---------------------------------------------------------------------------*/
 
class fanPressureJumpFvPatchScalarField
:
    public fixedJumpFvPatchScalarField
{
    // Private Data
 
        //- Name of the flux transporting the field
        const word phiName_;
 
        //- Name of the density field used to normalise the mass flux
        //  if necessary
        const word rhoName_;
 
        //- Fan curve
        autoPtr<Function1<scalar>> fanCurve_;
 
        //- Jump table (backward compatibility)
        autoPtr<Function1<scalar>> jumpTable_;
 
        //- Set true to reverse jump direction
        const Switch reverse_;
 
 
public:
 
    //- Runtime type information
    TypeName("fanPressureJump");
 
 
    // Constructors
 
        //- Construct from patch, internal field and dictionary
        fanPressureJumpFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const dictionary&
        );
 
        //- Construct by mapping given patch onto a new patch
        fanPressureJumpFvPatchScalarField
        (
            const fanPressureJumpFvPatchScalarField&,
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const fieldMapper&
        );
 
        //- Disallow copy without setting internal field reference
        fanPressureJumpFvPatchScalarField
        (
            const fanPressureJumpFvPatchScalarField&
        ) = delete;
 
        //- Copy constructor setting internal field reference
        fanPressureJumpFvPatchScalarField
        (
            const fanPressureJumpFvPatchScalarField&,
            const DimensionedField<scalar, volMesh>&
        );
 
        //- Construct and return a clone setting internal field reference
        virtual tmp<fvPatchField<scalar>> clone
        (
            const DimensionedField<scalar, volMesh>& iF
        ) const
        {
            return tmp<fvPatchField<scalar>>
            (
                new fanPressureJumpFvPatchScalarField(*this, iF)
            );
        }
 
 
    // Member Functions
 
        //- Update the coefficients associated with the patch field
        virtual void updateCoeffs();
 
        //- Write
        virtual void write(Ostream&) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //