GradientDispersionRAS.H

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
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    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.
 
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    You should have received a copy of the GNU General Public License
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Class
    Foam::GradientDispersionRAS
 
Description
    The velocity is perturbed in the direction of -grad(k), with a
    Gaussian random number distribution with variance sigma.
    where sigma is defined below
 
\*---------------------------------------------------------------------------*/
 
#ifndef GradientDispersionRAS_H
#define GradientDispersionRAS_H
 
#include "DispersionRASModel.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                    Class GradientDispersionRAS Declaration
\*---------------------------------------------------------------------------*/
 
template<class CloudType>
class GradientDispersionRAS
:
    public DispersionRASModel<CloudType>
{
protected:
 
    // Protected data
 
        // Locally cached turbulence fields
 
            //- Gradient of k
            const volVectorField* gradkPtr_;
 
            //- Take ownership of the grad(k)
            mutable bool ownGradK_;
 
 
public:
 
    //- Runtime type information
    TypeName("gradientDispersionRAS");
 
 
    // Constructors
 
        //- Construct from components
        GradientDispersionRAS(const dictionary& dict, CloudType& owner);
 
        //- Construct copy
        GradientDispersionRAS(const GradientDispersionRAS<CloudType>& dm);
 
        //- Construct and return a clone
        virtual autoPtr<DispersionModel<CloudType> > clone() const
        {
            return autoPtr<DispersionModel<CloudType> >
            (
                new GradientDispersionRAS<CloudType>(*this)
            );
        }
 
 
    //- Destructor
    virtual ~GradientDispersionRAS();
 
 
    // Member Functions
 
        //- Cache carrier fields
        virtual void cacheFields(const bool store);
 
        //- Update (disperse particles)
        virtual vector update
        (
            const scalar dt,
            const label cellI,
            const vector& U,
            const vector& Uc,
            vector& UTurb,
            scalar& tTurb
        );
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#ifdef NoRepository
#   include "GradientDispersionRAS.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //