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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2011-2026 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/>.
\*---------------------------------------------------------------------------*/
#include "harmonicSpring.H"
#include "addToRunTimeSelectionTable.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace tetherPotentials
{
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
defineTypeNameAndDebug(harmonicSpring, 0);
addToRunTimeSelectionTable
(
tetherPotential,
harmonicSpring,
dictionary
);
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
harmonicSpring::harmonicSpring
(
const word& name,
const dictionary& tetherPotentialProperties
)
:
tetherPotential(name, tetherPotentialProperties),
harmonicSpringCoeffs_
(
tetherPotentialProperties.typeDict(typeName)
),
springConstant_
(
harmonicSpringCoeffs_.template lookup<scalar>("springConstant")
)
{}
// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
scalar harmonicSpring::energy(const vector r) const
{
return 0.5*springConstant_*magSqr(r);
}
vector harmonicSpring::force(const vector r) const
{
return -springConstant_*r;
}
bool harmonicSpring::read(const dictionary& tetherPotentialProperties)
{
tetherPotential::read(tetherPotentialProperties);
harmonicSpringCoeffs_ =
tetherPotentialProperties.typeDict(typeName);
harmonicSpringCoeffs_.lookup("springConstant") >> springConstant_;
return true;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace tetherPotentials
} // End namespace Foam
// ************************************************************************* //
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