123 lines
3.3 KiB
C++
123 lines
3.3 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) 2016 OpenFOAM Foundation
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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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Class
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Foam::RBD::rigidBodySolvers::symplectic
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Description
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Symplectic 2nd-order explicit time-integrator for rigid-body motion.
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Reference:
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\verbatim
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Dullweber, A., Leimkuhler, B., & McLachlan, R. (1997).
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Symplectic splitting methods for rigid body molecular dynamics.
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The Journal of chemical physics, 107(15), 5840-5851.
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\endverbatim
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Can only be used for explicit integration of the motion of the body,
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i.e. may only be called once per time-step, no outer-correctors may be
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applied. For implicit integration with outer-correctors choose either
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CrankNicolson or Newmark schemes.
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Example specification in dynamicMeshDict:
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\verbatim
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solver
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{
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type symplectic;
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}
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\endverbatim
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SeeAlso
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Foam::RBD::rigidBodySolvers::CrankNicolson
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Foam::RBD::rigidBodySolvers::Newmark
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SourceFiles
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symplectic.C
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\*---------------------------------------------------------------------------*/
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#ifndef symplectic_H
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#define symplectic_H
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#include "rigidBodySolver.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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namespace RBD
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{
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namespace rigidBodySolvers
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{
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/*---------------------------------------------------------------------------*\
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Class symplectic Declaration
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\*---------------------------------------------------------------------------*/
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class symplectic
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:
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public rigidBodySolver
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{
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public:
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//- Runtime type information
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TypeName("symplectic");
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// Constructors
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//- Construct for the given body from dictionary
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symplectic
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(
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rigidBodyMotion& body,
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const dictionary& dict
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);
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//- Destructor
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virtual ~symplectic();
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// Member Functions
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//- Integrate the rigid-body motion for one time-step
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virtual void solve
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(
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const scalarField& tau,
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const Field<spatialVector>& fx
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);
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace rigidBodySolvers
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} // End namespace RBD
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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