flux.H

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/*---------------------------------------------------------------------------*\
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    \\  /    A nd           | www.openfoam.com
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-------------------------------------------------------------------------------
    Copyright (C) 2016-2020 OpenCFD Ltd.
-------------------------------------------------------------------------------
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::functionObjects::flux
 
Group
    grpFieldFunctionObjects
 
Description
    Computes the flux of an input vector field.
 
    Operands:
    \table
      Operand      | Type                     | Location
      input        | {vol,surface}VectorField | <time>/inputField
      output file  | -                        | -
      output field | surfaceScalarField       | <time>/outputField
    \endtable
 
Usage
    Minimal example by using \c system/controlDict.functions:
    \verbatim
    flowTypeFO
    {
        // Mandatory entries
        type            flux;
        libs            (fieldFunctionObjects);
 
        // Optional entries
        rho             <word>;
 
        // Inherited entries
        ...
    }
    \endverbatim
 
    where the entries mean:
    \table
        Property     | Description                        | Type | Reqd  | Deflt
        type         | Type name: flux                    | word |  yes  | -
        libs         | Library name: fieldFunctionObjects | word |  yes  | -
        rho          | Name of density field              | word |  no   | none
    \endtable
 
    The inherited entries are elaborated in:
      - \link fieldExpression.H \endlink
 
SourceFiles
    flux.C
    fluxTemplates.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_functionObjects_flux_H
#define Foam_functionObjects_flux_H
 
#include "fieldExpression.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace functionObjects
{
 
/*---------------------------------------------------------------------------*\
                            Class flux Declaration
\*---------------------------------------------------------------------------*/
 
class flux
:
    public fieldExpression
{
    // Private Data
 
        //- Name of density field
        word rhoName_;
 
 
    // Private Member Functions
 
        //- Calculate the flux of a volVectorField and register the result
        template<class FieldType, class RhoFieldType>
        bool calcVolFlux(const RhoFieldType& rho);
 
        //- Calculate the flux of a surfaceVectorField and register the result
        template<class FieldType, class RhoFieldType>
        bool calcSurFlux(const RhoFieldType& rho);
 
        //- Calculate the flux field and return true if successful
        virtual bool calc();
 
 
public:
 
    //- Runtime type information
    TypeName("flux");
 
 
    // Constructors
 
        //- Construct from name, Time and dictionary
        flux
        (
            const word& name,
            const Time& runTime,
            const dictionary& dict
        );
 
        //- No copy construct
        flux(const flux&) = delete;
 
        //- No copy assignment
        void operator=(const flux&) = delete;
 
 
    //- Destructor
    virtual ~flux() = default;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace functionObjects
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "fluxTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //