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Initialize at openlb-1-3
Diffstat (limited to 'src/boundary/momentaOnBoundaries.hh')
-rw-r--r-- | src/boundary/momentaOnBoundaries.hh | 427 |
1 files changed, 427 insertions, 0 deletions
diff --git a/src/boundary/momentaOnBoundaries.hh b/src/boundary/momentaOnBoundaries.hh new file mode 100644 index 0000000..3ec9f94 --- /dev/null +++ b/src/boundary/momentaOnBoundaries.hh @@ -0,0 +1,427 @@ +/* This file is part of the OpenLB library + * + * Copyright (C) 2006, 2007 Jonas Latt + * 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. +*/ + +/** \file + * Implementation of boundary cell dynamics -- generic implementation. + */ +#ifndef MOMENTA_ON_BOUNDARIES_HH +#define MOMENTA_ON_BOUNDARIES_HH + +#include "momentaOnBoundaries.h" +#include "core/util.h" +#include "dynamics/lbHelpers.h" + +namespace olb { + +////////////////////// Class EquilibriumBM ////////////////////// + +template<typename T, typename DESCRIPTOR> +EquilibriumBM<T,DESCRIPTOR>::EquilibriumBM() +{ + _rho = (T)1; + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + _u[iD] = T(); + } +} + +template<typename T, typename DESCRIPTOR> +EquilibriumBM<T,DESCRIPTOR>::EquilibriumBM(T rho, const T u[DESCRIPTOR::d]) +{ + _rho = rho; + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + _u[iD] = u[iD]; + } +} + +template<typename T, typename DESCRIPTOR> +T EquilibriumBM<T,DESCRIPTOR>::computeRho( Cell<T,DESCRIPTOR> const& cell ) const +{ + return _rho; +} + +template<typename T, typename DESCRIPTOR> +void EquilibriumBM<T,DESCRIPTOR>::computeU( + Cell<T,DESCRIPTOR> const& cell, T u[DESCRIPTOR::d]) const +{ + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + u[iD] = _u[iD]; + } +} + +template<typename T, typename DESCRIPTOR> +void EquilibriumBM<T,DESCRIPTOR>::computeJ ( + Cell<T,DESCRIPTOR> const& cell, T j[DESCRIPTOR::d]) const +{ + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + j[iD] = _u[iD]*_rho; + } +} + +template<typename T, typename DESCRIPTOR> +void EquilibriumBM<T,DESCRIPTOR>::computeStress( Cell<T,DESCRIPTOR> const& cell, + T rho, const T u[DESCRIPTOR::d], T pi[util::TensorVal<DESCRIPTOR >::n] ) const +{ + for (int iPi=0; iPi<util::TensorVal<DESCRIPTOR >::n; ++iPi) { + pi[iPi] = T(); + } +} + + +template<typename T, typename DESCRIPTOR> +void EquilibriumBM<T,DESCRIPTOR>::defineRho( Cell<T,DESCRIPTOR>& cell, T rho ) +{ + _rho = rho; +} + +template<typename T, typename DESCRIPTOR> +void EquilibriumBM<T,DESCRIPTOR>::defineU( + Cell<T,DESCRIPTOR>& cell, const T u[DESCRIPTOR::d]) +{ + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + _u[iD] = u[iD]; + } +} + +template<typename T, typename DESCRIPTOR> +void EquilibriumBM<T,DESCRIPTOR>::defineAllMomenta( Cell<T,DESCRIPTOR>& cell, + T rho, const T u[DESCRIPTOR::d], const T pi[util::TensorVal<DESCRIPTOR >::n] ) +{ + defineRho(cell, rho); + defineU(cell, u); +} + + + +////////////////////// Class VelocityBM ////////////////////// + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +VelocityBM<T,DESCRIPTOR,direction,orientation>::VelocityBM() +{ + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + _u[iD] = T(); + } +} + +/** It takes as argument the value of the velocity to be imposed on the + * boundary. + */ +template<typename T, typename DESCRIPTOR, int direction, int orientation> +VelocityBM<T,DESCRIPTOR,direction,orientation>::VelocityBM(const T u[DESCRIPTOR::d]) +{ + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + _u[iD] = u[iD]; + } +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +T VelocityBM<T,DESCRIPTOR,direction,orientation>::computeRho( Cell<T,DESCRIPTOR> const& cell ) const +{ + return velocityBMRho<T, DESCRIPTOR, direction, orientation>(cell, _u); +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +void VelocityBM<T,DESCRIPTOR,direction,orientation>::computeU ( + Cell<T,DESCRIPTOR> const& cell, T u[DESCRIPTOR::d]) const +{ + computeU(u); +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +void VelocityBM<T,DESCRIPTOR,direction,orientation>::computeJ ( + Cell<T,DESCRIPTOR> const& cell, T j[DESCRIPTOR::d]) const +{ + T rho = computeRho(cell); + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + j[iD] = _u[iD]*rho; + } +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +void VelocityBM<T,DESCRIPTOR,direction,orientation>::computeU( T u[DESCRIPTOR::d] ) const +{ + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + u[iD] = _u[iD]; + } +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +void VelocityBM<T,DESCRIPTOR,direction,orientation>::defineRho(Cell<T,DESCRIPTOR>& cell, T rho ) +{ +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +void VelocityBM<T,DESCRIPTOR,direction,orientation>::defineU ( + Cell<T,DESCRIPTOR>& cell, const T u[DESCRIPTOR::d]) +{ + defineU(u); +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +void VelocityBM<T,DESCRIPTOR,direction,orientation>::defineU(const T u[DESCRIPTOR::d]) +{ + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + _u[iD] = u[iD]; + } +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +void VelocityBM<T,DESCRIPTOR,direction,orientation>::defineAllMomenta ( + Cell<T,DESCRIPTOR>& cell, T rho, const T u[DESCRIPTOR::d], const T pi[util::TensorVal<DESCRIPTOR >::n] ) +{ + this->defineRhoU(cell, rho, u); +} + + +////////////////////// Class PressureBM ////////////////////// + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +PressureBM<T,DESCRIPTOR,direction,orientation>::PressureBM() +{ + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + _values[iD] = T(); + } + _values[direction] = 1.; +} + +/** It takes as argument the value of the tangential velocity + * components, and the pressure, to be imposed on the boundary. + */ +template<typename T, typename DESCRIPTOR, int direction, int orientation> +PressureBM<T,DESCRIPTOR,direction,orientation>::PressureBM(const T values[DESCRIPTOR::d]) +{ + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + _values[iD] = values[iD]; + } +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +T PressureBM<T,DESCRIPTOR,direction,orientation>::computeRho( Cell<T,DESCRIPTOR> const& cell ) const +{ + return computeRho(); +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +T PressureBM<T,DESCRIPTOR,direction,orientation>::computeRho() const +{ + return _values[direction]; +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +void PressureBM<T,DESCRIPTOR,direction,orientation>::computeU ( + Cell<T,DESCRIPTOR> const& cell, T u[DESCRIPTOR::d]) const +{ + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + u[iD] = _values[iD]; + } + T rho = _values[direction]; + + std::vector<int> const& onWallIndices + = util::subIndex<DESCRIPTOR, direction, 0>(); + + std::vector<int> const& normalIndices + = util::subIndex<DESCRIPTOR, direction, orientation>(); + + T rhoOnWall = T(); + for (auto & e : onWallIndices) { + rhoOnWall += cell[e]; + } + + T rhoNormal = T(); + for (auto & e : normalIndices) { + rhoNormal += cell[e]; + } + + u[direction] = (T)orientation*( ((T)2*rhoNormal+rhoOnWall+(T)1 ) / rho-(T)1 ); +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +void PressureBM<T,DESCRIPTOR,direction,orientation>::computeJ ( + Cell<T,DESCRIPTOR> const& cell, T j[DESCRIPTOR::d]) const +{ + computeU(cell, j); + T rho = computeRho(cell); + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + j[iD] *= rho; + } +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +void PressureBM<T,DESCRIPTOR,direction,orientation>::defineRho(Cell<T,DESCRIPTOR>& cell, T rho) +{ + defineRho(rho); +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +void PressureBM<T,DESCRIPTOR,direction,orientation>::defineRho(T rho ) +{ + _values[direction] = rho; +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +void PressureBM<T,DESCRIPTOR,direction,orientation>::defineU(Cell<T,DESCRIPTOR>& cell, const T u[DESCRIPTOR::d]) +{ + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + if (iD != direction) { + _values[iD] = u[iD]; + } + } +} + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +void PressureBM<T,DESCRIPTOR,direction,orientation>::defineAllMomenta( + Cell<T,DESCRIPTOR>& cell, T rho, const T u[DESCRIPTOR::d], const T pi[util::TensorVal<DESCRIPTOR >::n] ) +{ + this->defineRhoU(cell, rho, u); +} + + +//////// FreeStressBM ////////////////////////////////////////////// + +template<typename T, typename DESCRIPTOR> +void FreeStressBM<T,DESCRIPTOR>::computeStress ( + Cell<T,DESCRIPTOR> const& cell, T rho, const T u[DESCRIPTOR::d], T pi[util::TensorVal<DESCRIPTOR >::n] ) const +{ + lbHelpers<T,DESCRIPTOR>::computeStress(cell, rho, u, pi); +} + + + +////////////////////// Class RegularizedBM ////////////////////// + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +void RegularizedBM<T,DESCRIPTOR,direction,orientation>::computeStress ( + Cell<T,DESCRIPTOR> const& cell, T rho, const T u[DESCRIPTOR::d], + T pi[util::TensorVal<DESCRIPTOR >::n] ) const +{ + BoundaryHelpers<T,DESCRIPTOR,direction,orientation>::computeStress(cell, rho, u, pi); +} + +////////////////////// Class FixedVelocityBM ////////////////////////// + +template<typename T, typename DESCRIPTOR> +T FixedVelocityBM<T,DESCRIPTOR>::computeRho(Cell<T,DESCRIPTOR> const& cell) const +{ + return _basicMomenta.computeRho(cell); +} + +template<typename T, typename DESCRIPTOR> +void FixedVelocityBM<T,DESCRIPTOR>::computeU(Cell<T,DESCRIPTOR> const& cell, T u[DESCRIPTOR::d]) const +{ + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + u[iD] = _fixU[iD]; + } +} + +template<typename T, typename DESCRIPTOR> +void FixedVelocityBM<T,DESCRIPTOR>::computeJ(Cell<T,DESCRIPTOR> const& cell, T j[DESCRIPTOR::d]) const +{ + T rho = computeRho(cell); + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + j[iD] = _fixU[iD]*rho; + } +} + +template<typename T, typename DESCRIPTOR> +void FixedVelocityBM<T,DESCRIPTOR>::computeStress ( + Cell<T,DESCRIPTOR> const& cell, T rho, const T u[DESCRIPTOR::d], T pi[util::TensorVal<DESCRIPTOR >::n] ) const +{ + _basicMomenta.computeStress(cell, rho, u, pi); +} + +template<typename T, typename DESCRIPTOR> +void FixedVelocityBM<T,DESCRIPTOR>::computeRhoU ( + Cell<T,DESCRIPTOR> const& cell, T& rho, T u[DESCRIPTOR::d] ) const +{ + rho = computeRho(cell); + computeU(cell,u); +} + +template<typename T, typename DESCRIPTOR> +void FixedVelocityBM<T,DESCRIPTOR>::computeAllMomenta ( + Cell<T,DESCRIPTOR> const& cell, T& rho, T u[DESCRIPTOR::d], T pi[util::TensorVal<DESCRIPTOR >::n] ) const +{ + _basicMomenta.computeAllMomenta(cell, rho, u, pi); + computeU(cell, u); +} + +template<typename T, typename DESCRIPTOR> +void FixedVelocityBM<T,DESCRIPTOR>::defineRho(Cell<T,DESCRIPTOR>& cell, T rho) +{ + _basicMomenta.defineRho(cell, rho); +} + +template<typename T, typename DESCRIPTOR> +void FixedVelocityBM<T,DESCRIPTOR>::defineU(Cell<T,DESCRIPTOR>& cell, const T u[DESCRIPTOR::d]) +{ + for (int iD=0; iD<DESCRIPTOR::d; ++iD) { + _fixU[iD] = u[iD]; + } +} + +template<typename T, typename DESCRIPTOR> +void FixedVelocityBM<T,DESCRIPTOR>::defineRhoU(Cell<T,DESCRIPTOR>& cell, T rho, const T u[DESCRIPTOR::d]) +{ + defineRho(cell,rho); + defineU(cell,u); +} + +template<typename T, typename DESCRIPTOR> +void FixedVelocityBM<T,DESCRIPTOR>::defineAllMomenta( Cell<T,DESCRIPTOR>& cell, T rho, const T u[DESCRIPTOR::d], + const T pi[util::TensorVal<DESCRIPTOR >::n] ) +{ + _basicMomenta.defineAllMomenta(cell, rho, u, pi); + defineU(cell,u); +} + +////////////////////// Extracted helper functions ////////////////////////// + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +T velocityBMRho( Cell<T,DESCRIPTOR> const& cell, const T* u ) +{ + std::vector<int> const& onWallIndices + = util::subIndex<DESCRIPTOR, direction, 0>(); + + std::vector<int> const& normalIndices + = util::subIndex<DESCRIPTOR, direction, orientation>(); + + T rhoOnWall = T(); + for (auto & e : onWallIndices) { + rhoOnWall += cell[e]; + } + + T rhoNormal = T(); + for (auto & e : normalIndices) { + rhoNormal += cell[e]; + } + + T rho =((T)2*rhoNormal+rhoOnWall+(T)1) / + ((T)1+(T)orientation*u[direction]); + + return rho; +} + + + +} // namespace olb + +#endif |