rotatingWallVelocityFvPatchVectorField.H

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Class
    Foam::rotatingWallVelocityFvPatchVectorField

Description
    Condition on velocity for a boundary consisting of a rotating solid of
    revolution, e.g. cylinder. Calculates a tangential component of velocity
    from the angular velocity and rotational axis and ensures a zero normal
    component.

Usage
    \table
        Property     | Description             | Required    | Default value
        origin       | origin of rotation in Cartesian co-ordinates | yes|
        axis         | axis of rotation        | yes         |
        omega        | angular velocity of the frame [rad/s] | yes    |
    \endtable

    Example of the boundary condition specification:
    \verbatim
    <patchName>
    {
        type            rotatingWallVelocity;
        origin          (0 0 0);
        axis            (0 0 1);
        omega           100;
    }
    \endverbatim

    The \c omega entry is a Function1 of time, see Foam::Function1s.

See also
    Foam::fixedValueFvPatchField
    Foam::Function1s

SourceFiles
    rotatingWallVelocityFvPatchVectorField.C

\*---------------------------------------------------------------------------*/

#ifndef rotatingWallVelocityFvPatchVectorField_H
#define rotatingWallVelocityFvPatchVectorField_H

#include "fixedValueFvPatchFields.H"
#include "Function1.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

/*---------------------------------------------------------------------------*\
           Class rotatingWallVelocityFvPatchVectorField Declaration
\*---------------------------------------------------------------------------*/

class rotatingWallVelocityFvPatchVectorField
:
    public fixedValueFvPatchVectorField
{
    // Private Data

        //- Origin of the rotation
        vector origin_;

        //- Axis of the rotation
        vector axis_;

        //- Rotational speed
        autoPtr<Function1<scalar>> omega_;


public:

    //- Runtime type information
    TypeName("rotatingWallVelocity");


    // Constructors

        //- Construct from patch and internal field
        rotatingWallVelocityFvPatchVectorField
        (
            const fvPatch&,
            const DimensionedField<vector, volMesh>&
        );

        //- Construct from patch, internal field and dictionary
        rotatingWallVelocityFvPatchVectorField
        (
            const fvPatch&,
            const DimensionedField<vector, volMesh>&,
            const dictionary&
        );

        //- Construct by mapping given rotatingWallVelocityFvPatchVectorField
        //  onto a new patch
        rotatingWallVelocityFvPatchVectorField
        (
            const rotatingWallVelocityFvPatchVectorField&,
            const fvPatch&,
            const DimensionedField<vector, volMesh>&,
            const fvPatchFieldMapper&
        );

        //- Disallow copy without setting internal field reference
        rotatingWallVelocityFvPatchVectorField
        (
            const rotatingWallVelocityFvPatchVectorField&
        ) = delete;

        //- Copy constructor setting internal field reference
        rotatingWallVelocityFvPatchVectorField
        (
            const rotatingWallVelocityFvPatchVectorField&,
            const DimensionedField<vector, volMesh>&
        );

        //- Construct and return a clone setting internal field reference
        virtual tmp<fvPatchVectorField> clone
        (
             const DimensionedField<vector, volMesh>& iF
        ) const
        {
            return tmp<fvPatchVectorField>
            (
                new rotatingWallVelocityFvPatchVectorField(*this, iF)
            );
        }



    // Member Functions

        // Access functions

            //- Return the origin of the rotation
            const vector& origin() const
            {
                return origin_;
            }

            //- Return the axis of the rotation
            const vector& axis() const
            {
                return axis_;
            }

            //- Return non-const access to the origin of the rotation
            vector& origin()
            {
                return origin_;
            }

            //- Return non-const access to the axis of the rotation
            vector& axis()
            {
                return axis_;
            }


        //- Update the coefficients associated with the patch field
        virtual void updateCoeffs();

        //- Write
        virtual void write(Ostream&) const;
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //