porousBafflePressureFvPatchField.H

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License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
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    the Free Software Foundation, either version 3 of the License, or
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Class
    Foam::porousBafflePressureFvPatchField
 
Group
    grpCoupledBoundaryConditions
 
Description
    This boundary condition provides a jump condition,
    using the \c cyclic condition as a base.
 
    The porous baffle introduces a pressure jump defined by:
 
    \f[
        \Delta p = -(D \mu U + 0.5 I \rho |U|^2 )L
    \f]
 
    where
    \vartable
        p      | pressure [Pa]
        \rho   | density [kg/m3]
        \mu    | laminar viscosity [Pa s]
        D      | Darcy coefficient
        I      | inertial coefficient
        L      | porous media length in the flow direction
    \endvartable
 
Usage
    Example of the boundary condition specification:
    \verbatim
    <patchName>
    {
        // Mandatory entries
        type            porousBafflePressure;
        D               0.001;
        I               1000000;
        length          0.1;
 
        // Optional entries
        phi             phi;
        rho             rho;
        uniformJump     false;
        value           uniform 0;
 
        // Inherited entries
        patchType       cyclic;
        jump            uniform 0;
        ...
    }
    \endverbatim
 
    where the entries mean:
    \table
      Property  | Description                          | Type | Reqd | Deflt
      type      | Type name: porousBafflePressure      | word | yes  | -
      D         | Darcy coefficient       | Function1<scalar> | yes  | -
      I         | Inertial coefficient    | Function1<scalar> | yes  | -
      length    | Porous media length in the flow direction   <!--
                -->                                 | scalar  | yes  | -
      uniformJump | Flag to apply a uniform pressure drop on  <!--
                --> the patch based on the             | bool | no   | false
      phi       | Name of flux field                   | word | no   | phi
      rho       | Name of density field                | word | no   | rho
      patchType | Underlying patch type should be \c cyclic | word | yes | -
      jump      | Jump value                    | scalarField | yes  | -
    \endtable
 
    The inherited entries are elaborated in:
      - \link fixedJumpFvPatchField.H \endlink
      - \link Function1.H \endlink
 
Note
    The underlying \c patchType should be set to \c cyclic.
 
SourceFiles
    porousBafflePressureFvPatchField.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef porousBafflePressureFvPatchField_H
#define porousBafflePressureFvPatchField_H
 
#include "fixedJumpFvPatchField.H"
#include "Function1.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                Class porousBafflePressureFvPatchField Declaration
\*---------------------------------------------------------------------------*/
 
class porousBafflePressureFvPatchField
:
    public fixedJumpFvPatchField<scalar>
{
    // Private Data
 
        //- Name of flux field (default = phi)
        const word phiName_;
 
        //- Name of density field (default = rho)
        const word rhoName_;
 
        //- Darcy pressure loss coefficient
        autoPtr<Function1<scalar>> D_;
 
        //- Inertia pressure lost coefficient
        autoPtr<Function1<scalar>> I_;
 
        //- Porous media length
        scalar length_;
 
        //- Aplies uniform pressure drop
        bool uniformJump_;
 
 
public:
 
    //- Runtime type information
    TypeName("porousBafflePressure");
 
 
    // Constructors
 
        //- Construct from patch and internal field
        porousBafflePressureFvPatchField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&
        );
 
        //- Construct from patch, internal field and dictionary
        porousBafflePressureFvPatchField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const dictionary&,
            const bool needValue = true
        );
 
        //- Construct by mapping given porousBafflePressureFvPatchField
        //- onto a new patch
        porousBafflePressureFvPatchField
        (
            const porousBafflePressureFvPatchField&,
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const fvPatchFieldMapper&
        );
 
        //- Construct as copy
        porousBafflePressureFvPatchField
        (
            const porousBafflePressureFvPatchField&
        );
 
        //- Construct as copy setting internal field reference
        porousBafflePressureFvPatchField
        (
            const porousBafflePressureFvPatchField&,
            const DimensionedField<scalar, volMesh>&
        );
 
        //- Return a clone
        virtual tmp<fvPatchField<scalar>> clone() const
        {
            return fvPatchField<scalar>::Clone(*this);
        }
 
        //- Clone with an internal field reference
        virtual tmp<fvPatchField<scalar>> clone
        (
            const DimensionedField<scalar, volMesh>& iF
        ) const
        {
            return fvPatchField<scalar>::Clone(*this, iF);
        }
 
 
    // Member Functions
 
        // Evaluation
 
            //- Update the coefficients associated with the patch field
            virtual void updateCoeffs();
 
        // I-O
 
            //- Write
            virtual void write(Ostream&) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //