TimeFunction_DimensionedFieldFunction.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::DimensionedFieldFunctions::TimeFunction
 
Description
    Time dependent internal and patch field initialisation and update function
 
    The field is initialised by evaluating the specified Foam::Function1
    for the current time.
 
Usage
    To coded pulsed inlet using the \c functionalFixedValue boundary condition:
    \verbatim
    inlet
    {
        type            functionalFixedValue;
 
        value
        {
            type        timeFunction;
 
            function
            {
                type        coded;
 
                name        pulse;
 
                codeInclude
                #{
                    #include "mathematicalConstants.H"
                #};
 
                code
                #{
                    return vector
                    (
                        0.5
                       *(1 - cos(constant::mathematical::twoPi*min(x/0.3, 1))),
                        0,
                        0
                    );
                #};
            }
        }
    }
    \endverbatim
 
SourceFiles
    TimeFunction_DimensionedFieldFunction.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef TimeFunction_DimensionedFieldFunction_H
#define TimeFunction_DimensionedFieldFunction_H
 
#include "DimensionedFieldFunction.H"
#include "Function1.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace DimensionedFieldFunctions
{
 
/*---------------------------------------------------------------------------*\
                            Class TimeFunction Declaration
\*---------------------------------------------------------------------------*/
 
template<class DimensionedFieldType>
class TimeFunction
:
    public DimensionedFieldFunction<DimensionedFieldType>
{
    // Private Data
 
        //- Time Function1 pointer
        autoPtr<Foam::Function1<typename DimensionedFieldType::Type_>> funcPtr_;
 
 
public:
 
    //- Runtime type information
    TypeName("timeFunction");
 
 
    // Constructors
 
        //- Construct with dictionary to initialise given field
        TimeFunction
        (
            const dictionary& dict,
            DimensionedFieldType& field
        );
 
        //- Construct a copy for the given field
        TimeFunction
        (
            const TimeFunction& dff,
            DimensionedFieldType& field
        );
 
        //- Construct and return a clone for the specified field
        virtual autoPtr<DimensionedFieldFunction<DimensionedFieldType>>
        clone(DimensionedFieldType& field) const;
 
 
    //- Destructor
    virtual ~TimeFunction()
    {}
 
 
    // Member Functions
 
        //- Evaluate the function and set the field
        virtual void evaluate();
 
        //- Update the field for the current time
        virtual bool update();
 
        //- Write data to dictionary stream
        virtual void write(Ostream& os) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace DimensionedFieldFunctions
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
#include "TimeFunction_DimensionedFieldFunction.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //