energySpectrum.H

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/*---------------------------------------------------------------------------*\
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-------------------------------------------------------------------------------
    Copyright (C) 2018-2020 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::energySpectrum
 
Group
    grpFieldFunctionObjects
 
Description
    Calculates the energy spectrum for a structured IJK mesh
 
Usage
    Example of function object specification:
    \verbatim
    energySpectrum1
    {
        type        energySpectrum;
        libs        (fieldFunctionObjects);
        ...
        log         yes;
    }
    \endverbatim
 
    Where the entries comprise:
    \table
        Property     | Description               | Required    | Default value
        type         | type name: energySpectrum | yes         |
        log          | write info to standard output | no      | yes
    \endtable
 
    Output data is written to the file <timeDir>/energySpectrum.dat
 
See also
    Foam::functionObjects::fvMeshFunctionObject
    Foam::functionObjects::writeFile
 
SourceFiles
    energySpectrum.C
    energySpectrumTemplates.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef functionObjects_energySpectrum_H
#define functionObjects_energySpectrum_H
 
#include "fvMeshFunctionObject.H"
#include "writeFile.H"
#include "Vector.H"
#include "vectorField.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace functionObjects
{
 
/*---------------------------------------------------------------------------*\
                       Class energySpectrum Declaration
\*---------------------------------------------------------------------------*/
 
class energySpectrum
:
    public fvMeshFunctionObject,
    public writeFile
{
protected:
 
    // Protected data
 
        //- I-J-K mesh addressing
        labelList cellAddr_;
 
        //- Name of velocity field, default = U
        word UName_;
 
        //- Number of cells in I-J-K directions
        Vector<int> N_;
 
        //- Reference point
        vector c0_;
 
        //- Cell length scale
        vector deltaC_;
 
        //- Wave number
        scalar kappaNorm_;
 
 
    // Protected Member Functions
 
 
        //- Output file header information
        virtual void writeFileHeader(Ostream& os);
 
        //- Calculate and write the spectrum
        void calcAndWriteSpectrum
        (
            const vectorField& U,
            const vectorField& C,
            const vector& c0,
            const vector& deltaC,
            const Vector<int>& N,
            const scalar kappaNorm
        );
 
        //- No copy construct
        energySpectrum(const energySpectrum&) = delete;
 
        //- No copy assignment
        void operator=(const energySpectrum&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("energySpectrum");
 
 
    // Constructors
 
        //- Construct from Time and dictionary
        energySpectrum
        (
            const word& name,
            const Time& runTime,
            const dictionary& dict
        );
 
 
    //- Destructor
    virtual ~energySpectrum() = default;
 
 
    // Member Functions
 
        //- Read the field min/max data
        virtual bool read(const dictionary&);
 
        //- Execute, currently does nothing
        virtual bool execute();
 
        //- Write the energySpectrum
        virtual bool write();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace functionObjects
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //