radialActuationDiskSource.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
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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.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    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::fv::radialActuationDiskSource
 
Description
    Actuation disk source including radial thrust
 
    Constant values for momentum source for actuation disk
    \f[
        T = 2 \rho A U_{o}^2 a (1-a)
    \f]
    and
    \f[
        U_1 = (1 - a)U_{o}
    \f]
 
    where:
    \vartable
        A   | disk area
        U_o | upstream velocity
        a   | 1 - Cp/Ct
        U_1 | velocity at the disk
    \endvartable
 
 
    The thrust is distributed by a radial function:
    \f[
        thrust(r) = T (C_0 + C_1 r^2 + C_2 r^4)
    \f]
 
    \heading Source usage
 
    Example usage:
    \verbatim
    actuationDiskSourceCoeffs
    {
        fieldName       U;          // name of field to apply source
        diskDir         (-1 0 0);   // disk direction
        Cp              0.1;        // power coefficient
        Ct              0.5;        // thrust coefficient
        diskArea        5.0;        // disk area
        coeffs          (0.1 0.5 0.01); // radial distribution coefficients
        upstreamPoint   (0 0 0);    // upstream point
    }
    \endverbatim
 
 
SourceFiles
    radialActuationDiskSource.C
    radialActuationDiskSourceTemplates.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef radialActuationDiskSource_H
#define radialActuationDiskSource_H
 
#include "actuationDiskSource.H"
#include "FixedList.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace fv
{
 
/*---------------------------------------------------------------------------*\
                  Class radialActuationDiskSource Declaration
\*---------------------------------------------------------------------------*/
 
class radialActuationDiskSource
:
    public actuationDiskSource
{
    // Private data
 
        //- Coeffcients for the radial distribution
        FixedList<scalar, 3> radialCoeffs_;
 
 
    // Private Member Functions
 
        //- Add resistance to the UEqn
        template<class RhoFieldType>
        void addRadialActuationDiskAxialInertialResistance
        (
            vectorField& Usource,
            const labelList& cells,
            const scalarField& V,
            const RhoFieldType& rho,
            const vectorField& U
        ) const;
 
        //- Disallow default bitwise copy construct
        radialActuationDiskSource(const radialActuationDiskSource&);
 
        //- Disallow default bitwise assignment
        void operator=(const radialActuationDiskSource&);
 
 
public:
 
    //- Runtime type information
    TypeName("radialActuationDiskSource");
 
 
    // Constructors
 
        //- Construct from components
        radialActuationDiskSource
        (
            const word& name,
            const word& modelType,
            const dictionary& dict,
            const fvMesh& mesh
        );
 
 
    //- Destructor
    virtual ~radialActuationDiskSource()
    {}
 
 
    // Member Functions
 
        //- Source term to momentum equation
        virtual void addSup
        (
            fvMatrix<vector>& eqn,
            const label fieldI
        );
 
        //- Source term to compressible momentum equation
        virtual void addSup
        (
            const volScalarField& rho,
            fvMatrix<vector>& eqn,
            const label fieldI
        );
 
 
    // IO
 
        //- Read dictionary
        virtual bool read(const dictionary& dict);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fv
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
#   include "radialActuationDiskSourceTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //