oscillatingFixedValueFvPatchField.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011-2014 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
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::oscillatingFixedValueFvPatchField
 
Group
    grpGenericBoundaryConditions
 
Description
    This boundary condition provides an oscillating condition in terms of
    amplitude and frequency.
 
        \f[
            x_p = (1 + a sin(2 \pi f t))x_{ref} + x_o
        \f]
 
    where
 
    \vartable
        x_p     | patch values
        x_{ref} | patch reference values
        x_o     | patch offset values
        a       | amplitude
        f       | frequency [1/s]
        t       | time [s]
    \endvartable
 
    \heading Patch usage
 
    \table
        Property     | Description             | Required    | Default value
        refValue     | reference value         | yes         |
        offset       | offset value            | no          | 0.0
        amplitude    | oscillation amplitude   | yes         |
        frequency    | oscillation frequency   | yes         |
    \endtable
 
    Example of the boundary condition specification:
    \verbatim
    myPatch
    {
        type            oscillatingFixedValue;
        refValue        uniform 5.0;
        offset          0.0;
        amplitude       constant 0.5;
        frequency       constant 10;
    }
    \endverbatim
 
Note
    The amplitude and frequency entries are DataEntry types, able to describe
    time varying functions.  The example above gives the usage for supplying
    constant values.
 
SeeAlso
    Foam::DataEntry
 
SourceFiles
    oscillatingFixedValueFvPatchField.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef oscillatingFixedValueFvPatchField_H
#define oscillatingFixedValueFvPatchField_H
 
#include "Random.H"
#include "fixedValueFvPatchFields.H"
#include "DataEntry.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
              Class oscillatingFixedValueFvPatchField Declaration
\*---------------------------------------------------------------------------*/
 
template<class Type>
class oscillatingFixedValueFvPatchField
:
    public fixedValueFvPatchField<Type>
{
    // Private data
 
        //- Reference value
        Field<Type> refValue_;
 
        //- Offset
        Type offset_;
 
        //- Amplitude
        autoPtr<DataEntry<scalar> > amplitude_;
 
        //- Frequency
        autoPtr<DataEntry<scalar> > frequency_;
 
        //- Current time index
        label curTimeIndex_;
 
 
    // Private Member Functions
 
        //- Return current scale
        scalar currentScale() const;
 
 
public:
 
    //- Runtime type information
    TypeName("oscillatingFixedValue");
 
 
    // Constructors
 
        //- Construct from patch and internal field
        oscillatingFixedValueFvPatchField
        (
            const fvPatch&,
            const DimensionedField<Type, volMesh>&
        );
 
        //- Construct from patch, internal field and dictionary
        oscillatingFixedValueFvPatchField
        (
            const fvPatch&,
            const DimensionedField<Type, volMesh>&,
            const dictionary&
        );
 
        //- Construct by mapping given oscillatingFixedValueFvPatchField
        //  onto a new patch
        oscillatingFixedValueFvPatchField
        (
            const oscillatingFixedValueFvPatchField<Type>&,
            const fvPatch&,
            const DimensionedField<Type, volMesh>&,
            const fvPatchFieldMapper&
        );
 
        //- Construct as copy
        oscillatingFixedValueFvPatchField
        (
            const oscillatingFixedValueFvPatchField<Type>&
        );
 
        //- Construct and return a clone
        virtual tmp<fvPatchField<Type> > clone() const
        {
            return tmp<fvPatchField<Type> >
            (
                new oscillatingFixedValueFvPatchField<Type>(*this)
            );
        }
 
        //- Construct as copy setting internal field reference
        oscillatingFixedValueFvPatchField
        (
            const oscillatingFixedValueFvPatchField<Type>&,
            const DimensionedField<Type, volMesh>&
        );
 
        //- Construct and return a clone setting internal field reference
        virtual tmp<fvPatchField<Type> > clone
        (
            const DimensionedField<Type, volMesh>& iF
        ) const
        {
            return tmp<fvPatchField<Type> >
            (
                new oscillatingFixedValueFvPatchField<Type>(*this, iF)
            );
        }
 
 
    // Member functions
 
        // Access
 
            //- Return the ref value
            const Field<Type>& refValue() const
            {
                return refValue_;
            }
 
            //- Return reference to the ref value to allow adjustment
            Field<Type>& refValue()
            {
                return refValue_;
            }
 
            //- Return amplitude
            scalar amplitude() const
            {
                return amplitude_;
            }
 
            scalar& amplitude()
            {
                return amplitude_;
            }
 
            //- Return frequency
            scalar frequency() const
            {
                return frequency_;
            }
 
            scalar& frequency()
            {
                return frequency_;
            }
 
 
        // Mapping functions
 
            //- Map (and resize as needed) from self given a mapping object
            virtual void autoMap
            (
                const fvPatchFieldMapper&
            );
 
            //- Reverse map the given fvPatchField onto this fvPatchField
            virtual void rmap
            (
                const fvPatchField<Type>&,
                const labelList&
            );
 
 
        // Evaluation functions
 
            //- Update the coefficients associated with the patch field
            virtual void updateCoeffs();
 
 
        //- Write
        virtual void write(Ostream&) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
#   include "oscillatingFixedValueFvPatchField.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //