power.H

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/*---------------------------------------------------------------------------*\
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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::functionObjects::power
 
Description
    Evaluates and writes the following power fields.
    \verbatim
    + tauUSf:           tauf & Uf
    + divTauU:          fvc::div(tauUSf)
    + divTauDotU:       fvc::div(tauf) & U
    + tauDDotGradU:     divTauU - divTauDotU
 
    + pUSf:            -pIf & Uf
    + divPU:            fvc::div(pUSf)
    + gradPU:          -fvc::grad(p) & U
    + pDivU:            divPU - gradPU
 
    + stressUSf:        tauUSf + pUSf
    + divStressU:       fvc::div(stressUSf)
    + divStressDotU:    fvc::div(stressf) & U
    + stressDDotGradU:  divStressU - divStressDotU
    \endverbatim
 
    where:
    \verbatim
    + p, U = cell centre pressure and velocity
    + pIf, Uf = face normal pressure force, and velocity, vectors
    + tauf = face shear force vectors [-transport.devTau()*mesh().magSf()]
    + stressf = tauf - pIf
    \endverbatim
 
    The domain integral of the volume fields (all except '...Sf' fields) is also
    printed to a log file in the postProcessing directory.  Domain integrals are
    scaled by a factor, which defaults to 1e9, to make them easier to process.
 
Usage
    An example is given below of a function object specification in the
    system/functions file with a scaling factor of 1e6 for the domain integrals
    \verbatim
    power
    {
        type        power;
        libs        ("libfieldFunctionObjects.so");
        executeControl  writeTime;
        writeControl    writeTime;
        log             true;
        factor          1e6;
    }
    \endverbatim
 
    Alternatively it can be specified using the standard 'power' function object
    configuration file as follows
    \verbatim
    #includeFunc power(factor=1e6)
    \endverbatim
 
See also
    Foam::functionObject
    Foam::functionObjects::fvMeshFunctionObject
    Foam::functionObjects::logFiles
    Foam::functionObjects::writeLocalObjects
    Foam::functionObjects::timeControl
 
SourceFiles
    power.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef power_functionObject_H
#define power_functionObject_H
 
#include "fvMeshFunctionObject.H"
#include "logFiles.H"
#include "writeLocalObjects.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace functionObjects
{
 
/*---------------------------------------------------------------------------*\
                     Class power Declaration
\*---------------------------------------------------------------------------*/
 
class power
:
    public fvMeshFunctionObject,
    public logFiles,
    public writeLocalObjects
{
    // Private Static data
 
        //- List of the power field names
        static const wordList fields_;
 
 
    // Private Member data
 
        //- Scaling factor for the power output (defaults to 1e9)
        scalar factor_;
 
 
    // Private Member Functions
 
        //- File header information
        virtual void writeFileHeader(const label i);
 
 
public:
 
    //- Runtime type information
    TypeName("power");
 
 
    // Constructors
 
        //- Construct from Time and dictionary
        power
        (
            const word& name,
            const Time& runTime,
            const dictionary& dict
        );
 
        //- Disallow default bitwise copy construction
        power(const power&) = delete;
 
 
    //- Destructor
    virtual ~power();
 
 
    // Member Functions
 
        //- Read the power data
        virtual bool read(const dictionary&);
 
        //- Return the list of fields required
        virtual wordList fields() const
        {
            return wordList::null();
        }
 
        //- Calculate the power field
        virtual bool execute();
 
        //- Write the power field
        virtual bool write();
 
 
    // Member Operators
 
        //- Disallow default bitwise assignment
        void operator=(const power&) = delete;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace functionObjects
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //