ddt.H

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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.
 
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    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::ddt
 
Description
    Calculates the Eulerian time derivative of a field.
 
    The operation can be applied to any volume field generating a field of the
    same type.
 
See also
    Foam::functionObjects::fvMeshFunctionObject
 
SourceFiles
    ddt.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef functionObjects_ddt_H
#define functionObjects_ddt_H
 
#include "fieldExpression.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace functionObjects
{
 
/*---------------------------------------------------------------------------*\
                             Class ddt Declaration
\*---------------------------------------------------------------------------*/
 
class ddt
:
    public fieldExpression
{
    // Private Member Functions
 
        //- Calculate the magnitude of the field and register the result
        template<class Type>
        bool calcDdt();
 
        //- Calculate the time derivative of the field and return
        //  true if successful
        virtual bool calc();
 
 
public:
 
    //- Runtime type information
    TypeName("ddt");
 
 
    // Constructors
 
        //- Construct from Time and dictionary
        ddt
        (
            const word& name,
            const Time& runTime,
            const dictionary& dict
        );
 
 
    //- Destructor
    virtual ~ddt();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace functionObjects
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
    #include "ddtTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //