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Diffstat (limited to 'src/particles/forces/linearDampingForceForMagDipoleMoment3D.hh')
-rw-r--r-- | src/particles/forces/linearDampingForceForMagDipoleMoment3D.hh | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/particles/forces/linearDampingForceForMagDipoleMoment3D.hh b/src/particles/forces/linearDampingForceForMagDipoleMoment3D.hh new file mode 100644 index 0000000..5542fc4 --- /dev/null +++ b/src/particles/forces/linearDampingForceForMagDipoleMoment3D.hh @@ -0,0 +1,63 @@ +/* This file is part of the OpenLB library + * + * Copyright (C) 2017 Marie-Luise Maier, Mathias J. Krause, Sascha Janz + * E-mail contact: info@openlb.net + * The most recent release of OpenLB can be downloaded at + * <http://www.openlb.net/> + * + * This program 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 2 + * of the License, or (at your option) any later version. + * + * This program 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 this program; if not, write to the Free + * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +/// Linear damping Force for magnetic dipolemoment in magnetic Field + +#ifndef LinearDampingForceForMagDipoleMoment3D_HH +#define LinearDampingForceForMagDipoleMoment3D_HH + +#include <cmath> +#include <vector> +#include "linearDampingForceForMagDipoleMoment3D.h" + +#ifndef M_PI +#define M_PI 3.14159265358979323846 +#endif + +namespace olb { + +template<typename T, template<typename U> class PARTICLETYPE, typename DESCRIPTOR> +LinearDampingForceForMagDipoleMoment3D<T, PARTICLETYPE, DESCRIPTOR>::LinearDampingForceForMagDipoleMoment3D(T dynVisc, T frictionFac): + Force3D<T, PARTICLETYPE>(), _dynVisc(dynVisc), _frictionFac(frictionFac) +{ +// this->_name = "LinearDampingForceForMagDipoleMoment3D"; +} + +template<typename T, template<typename U> class PARTICLETYPE, typename DESCRIPTOR> +void LinearDampingForceForMagDipoleMoment3D<T, PARTICLETYPE, DESCRIPTOR>::applyForce( + typename std::deque<PARTICLETYPE<T> >::iterator p, int pInt, + ParticleSystem3D<T, PARTICLETYPE>& pSys) +{ + + Vector<T, 3> dampingForce = {T(0), T(0), T(0)} ; + + for (int i = 0; i < 3; i++) { + + dampingForce[i] = - 8 * M_PI * pow(p->getRad(), 3.) * _dynVisc * p->getAVel()[i] * _frictionFac ; + p->getTorque()[i] += dampingForce[i] ; + } +} + +} + +#endif // LinearDampingForceForMagDipoleMoment3D_HH |