cylindricalFunctionObject.H

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License
    This file is part of OpenFOAM.
 
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Class
    Foam::functionObjects::cylindrical
 
Description
    Transforms the specified velocity field into a
    cylindrical polar coordinate system or back to Cartesian.
 
    Example of function object specification to convert the velocity field U
    into cylindrical polar coordinates before averaging and returning the
    average to Cartesian coordinates:
    \verbatim
    cartesianToCylindrical
    {
        type        cylindrical;
        libs        ("libfieldFunctionObjects.so");
 
        origin      (0 0 0);
        axis        (0 0 1);
 
        field       U;
 
        writeControl    outputTime;
        writeInterval   1;
    }
 
    #includeFunc fieldAverage(cylindrical(U))
 
    cylindricalToCartesian
    {
        type        cylindrical;
        libs        ("libfieldFunctionObjects.so");
 
        origin      (0 0 0);
        axis        (0 0 1);
 
        field       cylindrical(U)Mean;
        toCartesian true;
        result      UMean;
 
        writeControl    outputTime;
        writeInterval   1;
    }
    \endverbatim
    This is particularly useful for cases with rotating regions, e.g. mixer
    vessels with NCC.
 
See also
    Foam::functionObjects::fieldExpression
    Foam::functionObjects::fvMeshFunctionObject
 
SourceFiles
    cylindrical.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef cylindricalFunctionObject_H
#define cylindricalFunctionObject_H
 
#include "fieldExpression.H"
#include "primitiveFieldsFwd.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace functionObjects
{
 
/*---------------------------------------------------------------------------*\
                          Class cylindrical Declaration
\*---------------------------------------------------------------------------*/
 
class cylindrical
:
    public fieldExpression
{
    // Private Data
 
        vector origin_;
 
        vector axis_;
 
 
    // Private Member Functions
 
        tensor R(const vector& p) const;
 
        void transform(vectorField& vf, const vectorField& points) const;
 
        bool toCartesian_;
 
        //- Calculate the cylindrical field and return true if successful
        virtual bool calc();
 
 
public:
 
    //- Runtime type information
    TypeName("cylindrical");
 
 
    // Constructors
 
        //- Construct from Time and dictionary
        cylindrical
        (
            const word& name,
            const Time& runTime,
            const dictionary& dict
        );
 
 
    //- Destructor
    virtual ~cylindrical();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace functionObjects
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //