98 lines
2.7 KiB
C
98 lines
2.7 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2008-2011 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "harmonicSpring.H"
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#include "addToRunTimeSelectionTable.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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namespace tetherPotentials
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{
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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defineTypeNameAndDebug(harmonicSpring, 0);
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addToRunTimeSelectionTable
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(
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tetherPotential,
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harmonicSpring,
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dictionary
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);
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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harmonicSpring::harmonicSpring
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(
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const word& name,
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const dictionary& tetherPotentialProperties
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)
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:
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tetherPotential(name, tetherPotentialProperties),
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harmonicSpringCoeffs_
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(
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tetherPotentialProperties.subDict(typeName + "Coeffs")
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),
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springConstant_(readScalar(harmonicSpringCoeffs_.lookup("springConstant")))
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{}
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// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
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scalar harmonicSpring::energy(const vector r) const
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{
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return 0.5*springConstant_*magSqr(r);
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}
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vector harmonicSpring::force(const vector r) const
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{
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return -springConstant_*r;
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}
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bool harmonicSpring::read(const dictionary& tetherPotentialProperties)
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{
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tetherPotential::read(tetherPotentialProperties);
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harmonicSpringCoeffs_ =
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tetherPotentialProperties.subDict(typeName + "Coeffs");
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harmonicSpringCoeffs_.lookup("springConstant") >> springConstant_;
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return true;
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace tetherPotentials
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} // End namespace Foam
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// ************************************************************************* //
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