OpenFOAM-dev / data /src /lagrangian /molecularDynamics /potential /tetherPotential /derived /harmonicSpring /harmonicSpring.C
| /*---------------------------------------------------------------------------*\ | |
| ========= | | |
| \\ / 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. | |
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| 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/>. | |
| \*---------------------------------------------------------------------------*/ | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| 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 | |
| // ************************************************************************* // | |