harmonicSpring.H

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011 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
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    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::tetherPotentials::harmonicSpring
 
Description
 
 
SourceFiles
    harmonicSpring.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef harmonicSpring_H
#define harmonicSpring_H
 
#include "tetherPotential.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace tetherPotentials
{
 
/*---------------------------------------------------------------------------*\
                       Class harmonicSpring Declaration
\*---------------------------------------------------------------------------*/
 
class harmonicSpring
:
    public tetherPotential
{
    // Private data
 
        dictionary harmonicSpringCoeffs_;
 
        scalar springConstant_;
 
 
public:
 
    //- Runtime type information
    TypeName("harmonicSpring");
 
 
    // Constructors
 
        //- Construct from components
        harmonicSpring
        (
            const word& name,
            const dictionary& tetherPotentialProperties
        );
 
 
    //- Destructor
    ~harmonicSpring()
    {}
 
 
    // Member Functions
 
        scalar energy(const vector r) const;
 
        vector force(const vector r) const;
 
        //- Read dictionary
        bool read(const dictionary& tetherPotentialProperties);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace tetherPotentials
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //