Stokes2.H

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Class
    Foam::waveModels::Stokes2

Description
    Second-order wave model.

    Reference:
    \verbatim
        Stokes, G.G. (1847)
        On the theory of oscillatory waves.
        Transactions of the Cambridge Philosophical Society, 8, 441.
    \endverbatim

    See equations 18 and 19.

SourceFiles
    Stokes2.C

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

#ifndef Stokes2_H
#define Stokes2_H

#include "Airy.H"

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

namespace Foam
{
namespace waveModels
{

/*---------------------------------------------------------------------------*\
                           Class Stokes2 Declaration
\*---------------------------------------------------------------------------*/

class Stokes2
:
    public Airy
{
public:

   //- Runtime type information
    TypeName("Stokes2");


    // Constructors

        //- Construct from a database and a dictionary
        Stokes2(const objectRegistry& db, const dictionary& dict);

        //- Construct a clone
        virtual autoPtr<waveModel> clone() const
        {
            return autoPtr<waveModel>(new Stokes2(*this));
        }


    //- Destructor
    virtual ~Stokes2();


    // Member Functions

        //- Get the wave elevation at a given time and local coordinates. Local
        //  x is aligned with the direction of propagation.
        virtual tmp<scalarField> elevation
        (
            const scalar t,
            const scalarField& x
        ) const;

        //- Get the wave velocity at a given time and local coordinates. Local
        //  x is aligned with the direction of propagation, and z with negative
        //  gravity.
        virtual tmp<vector2DField> velocity
        (
            const scalar t,
            const vector2DField& xz
        ) const;
};


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

} // End namespace Foam
} // End namespace waveModels

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

#endif

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