/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011-2013 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::TrajectoryCollision

Description
    Trajectory collision model by N. Nordin, based on O'Rourke's collision
    model

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

#ifndef TrajectoryCollision_H
#define TrajectoryCollision_H

#include "ORourkeCollision.H"

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

namespace Foam
{
/*---------------------------------------------------------------------------*\
                     Class TrajectoryCollision Declaration
\*---------------------------------------------------------------------------*/

template<class CloudType>
class TrajectoryCollision
:
    public ORourkeCollision<CloudType>
{
protected:

    // Protected Data

        //- Convenience typedef to the cloud's parcel type
        typedef typename CloudType::parcelType parcelType;

        //- Space coefficient
        scalar cSpace_;

        //- Time coefficient
        scalar cTime_;


    // Protected Member Functions

        //- Main collision routine
        virtual void collide(const scalar dt);

        //- Collide parcels and return true if mass has changed
        virtual bool collideParcels
        (
            const scalar dt,
            parcelType& p1,
            parcelType& p2,
            scalar& m1,
            scalar& m2
        );


public:

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


    // Constructors

        //- Construct from dictionary
        TrajectoryCollision(const dictionary& dict, CloudType& cloud);

        //- Construct copy
        TrajectoryCollision(const TrajectoryCollision<CloudType>& cm);

        //- Construct and return a clone
        virtual autoPtr<StochasticCollisionModel<CloudType> > clone() const
        {
            return autoPtr<StochasticCollisionModel<CloudType> >
            (
                new TrajectoryCollision<CloudType>(*this)
            );
        }


    //- Destructor
    virtual ~TrajectoryCollision();
};


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

} // End namespace Foam

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

#ifdef NoRepository
#   include "TrajectoryCollision.C"
#endif

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

#endif

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