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Diffstat (limited to 'src/boundary/boundaryPostProcessors2D.h')
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diff --git a/src/boundary/boundaryPostProcessors2D.h b/src/boundary/boundaryPostProcessors2D.h new file mode 100644 index 0000000..b201bea --- /dev/null +++ b/src/boundary/boundaryPostProcessors2D.h @@ -0,0 +1,340 @@ +/* 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/> + * + * Generic version of the collision, which modifies the particle + * distribution functions, by Orestis Malaspinas. + * + * 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. +*/ + +#ifndef FD_BOUNDARIES_2D_H +#define FD_BOUNDARIES_2D_H + +#include "core/postProcessing.h" +#include "momentaOnBoundaries.h" +#include "core/blockLattice2D.h" + +namespace olb { + +/** +* This class computes the skordos BC +* on a flat wall in 2D but with a limited number of terms added to the +* equilibrium distributions (i.e. only the Q_i : Pi term) +*/ +template<typename T, typename DESCRIPTOR, int direction, int orientation> +class StraightFdBoundaryProcessor2D : public LocalPostProcessor2D<T,DESCRIPTOR> { +public: + StraightFdBoundaryProcessor2D(int x0_, int x1_, int y0_, int y1_); + int extent() const override + { + return 1; + } + int extent(int whichDirection) const override + { + return 1; + } + void process(BlockLattice2D<T,DESCRIPTOR>& blockLattice) override; + void processSubDomain ( BlockLattice2D<T,DESCRIPTOR>& blockLattice, + int x0_, int x1_, int y0_, int y1_ ) override; +private: + template<int deriveDirection> + void interpolateGradients ( + BlockLattice2D<T,DESCRIPTOR> const& blockLattice, + T velDeriv[DESCRIPTOR::d], int iX, int iY ) const; +private: + int x0, x1, y0, y1; +}; + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +class StraightFdBoundaryProcessorGenerator2D : public PostProcessorGenerator2D<T,DESCRIPTOR> { +public: + StraightFdBoundaryProcessorGenerator2D(int x0_, int x1_, int y0_, int y1_); + PostProcessor2D<T,DESCRIPTOR>* generate() const override; + PostProcessorGenerator2D<T,DESCRIPTOR>* clone() const override; +}; + +/** +* This class computes a convection BC on a flat wall in 2D +*/ +template<typename T, typename DESCRIPTOR, int direction, int orientation> +class StraightConvectionBoundaryProcessor2D : public LocalPostProcessor2D<T,DESCRIPTOR> { +public: + StraightConvectionBoundaryProcessor2D(int x0_, int x1_, int y0_, int y1_, T* uAv_ = NULL); + ~StraightConvectionBoundaryProcessor2D() override; + int extent() const override + { + return 1; + } + int extent(int whichDirection) const override + { + return 1; + } + void process(BlockLattice2D<T,DESCRIPTOR>& blockLattice) override; + void processSubDomain ( BlockLattice2D<T,DESCRIPTOR>& blockLattice, + int x0_, int x1_, int y0_, int y1_ ) override; +private: + int x0, x1, y0, y1; + T*** saveCell; + T* uAv; +}; + +template<typename T, typename DESCRIPTOR, int direction, int orientation> +class StraightConvectionBoundaryProcessorGenerator2D : public PostProcessorGenerator2D<T,DESCRIPTOR> { +public: + StraightConvectionBoundaryProcessorGenerator2D(int x0_, int x1_, int y0_, int y1_, T* uAv_ = NULL); + PostProcessor2D<T,DESCRIPTOR>* generate() const override; + PostProcessorGenerator2D<T,DESCRIPTOR>* clone() const override; +private: + T* uAv; +}; + +/** +* This class computes a slip BC in 2D +*/ + +template<typename T, typename DESCRIPTOR> +class SlipBoundaryProcessor2D : public LocalPostProcessor2D<T,DESCRIPTOR> { +public: + SlipBoundaryProcessor2D(int x0_, int x1_, int y0_, int y1_, int discreteNormalX_, int discreteNormalY_); + int extent() const override + { + return 0; + } + int extent(int whichDirection) const override + { + return 0; + } + void process(BlockLattice2D<T,DESCRIPTOR>& blockLattice) override; + void processSubDomain ( BlockLattice2D<T,DESCRIPTOR>& blockLattice, + int x0_, int x1_, int y0_, int y1_ ) override; +private: + int reflectionPop[DESCRIPTOR::q]; + int x0, x1, y0, y1; +}; + + +template<typename T, typename DESCRIPTOR> +class SlipBoundaryProcessorGenerator2D : public PostProcessorGenerator2D<T,DESCRIPTOR> { +public: + SlipBoundaryProcessorGenerator2D(int x0_, int x1_, int y0_, int y1_, int discreteNormalX_, int discreteNormalY_); + PostProcessor2D<T,DESCRIPTOR>* generate() const override; + PostProcessorGenerator2D<T,DESCRIPTOR>* clone() const override; +private: + int discreteNormalX; + int discreteNormalY; +}; + +/** +* This class computes a partial slip BC in 2D +*/ + +template<typename T, typename DESCRIPTOR> +class PartialSlipBoundaryProcessor2D : public LocalPostProcessor2D<T,DESCRIPTOR> { +public: + PartialSlipBoundaryProcessor2D(T tuner_, int x0_, int x1_, int y0_, int y1_, int discreteNormalX_, int discreteNormalY_); + int extent() const override + { + return 0; + } + int extent(int whichDirection) const override + { + return 0; + } + void process(BlockLattice2D<T,DESCRIPTOR>& blockLattice) override; + void processSubDomain ( BlockLattice2D<T,DESCRIPTOR>& blockLattice, + int x0_, int x1_, int y0_, int y1_ ) override; +private: + int reflectionPop[DESCRIPTOR::q]; + int x0, x1, y0, y1; + T tuner; +}; + + +template<typename T, typename DESCRIPTOR> +class PartialSlipBoundaryProcessorGenerator2D : public PostProcessorGenerator2D<T,DESCRIPTOR> { +public: + PartialSlipBoundaryProcessorGenerator2D(T tuner_, int x0_, int x1_, int y0_, int y1_, int discreteNormalX_, int discreteNormalY_); + PostProcessor2D<T,DESCRIPTOR>* generate() const override; + PostProcessorGenerator2D<T,DESCRIPTOR>* clone() const override; +private: + int discreteNormalX; + int discreteNormalY; + T tuner; +}; + +/** +* This class computes the skordos BC in 2D on a convex +* corner but with a limited number of terms added to the +* equilibrium distributions (i.e. only the Q_i : Pi term) +*/ +template<typename T, typename DESCRIPTOR, int xNormal,int yNormal> +class OuterVelocityCornerProcessor2D : public LocalPostProcessor2D<T, DESCRIPTOR> { +public: + OuterVelocityCornerProcessor2D(int x_, int y_); + int extent() const override + { + return 2; + } + int extent(int whichDirection) const override + { + return 2; + } + void process(BlockLattice2D<T,DESCRIPTOR>& blockLattice) override; + void processSubDomain(BlockLattice2D<T,DESCRIPTOR>& blockLattice, + int x0_,int x1_,int y0_,int y1_ ) override; +private: + int x, y; +}; + +template<typename T, typename DESCRIPTOR, int xNormal,int yNormal> +class OuterVelocityCornerProcessorGenerator2D : public PostProcessorGenerator2D<T, DESCRIPTOR> { +public: + OuterVelocityCornerProcessorGenerator2D(int x_, int y_); + PostProcessor2D<T,DESCRIPTOR>* generate() const override; + PostProcessorGenerator2D<T,DESCRIPTOR>* clone() const override; +}; + + +/// PostProcessor for the wetting boundary condition in the free energy model. This is +/// required to set rho on the boundary (using the denisty of the neighbouring cell in +/// direction of inwards facing normal at the boundary), as the coupling between the +/// lattices requires the calculation of a density gradient. +template<typename T, typename DESCRIPTOR> +class FreeEnergyWallProcessor2D : public LocalPostProcessor2D<T, DESCRIPTOR> { +public: + FreeEnergyWallProcessor2D(int x0_, int x1_, int y0_, int y1_, + int discreteNormalX_, int discreteNormalY_, T addend_); + int extent() const override + { + return 2; + } + int extent(int whichDirection) const override + { + return 2; + } + void process(BlockLattice2D<T,DESCRIPTOR>& blockLattice) override; + void processSubDomain(BlockLattice2D<T,DESCRIPTOR>& blockLattice, + int x0_,int x1_,int y0_,int y1_ ) override; +private: + int x0, x1, y0, y1; + int discreteNormalX, discreteNormalY; + T addend; +}; + +/// Generator class for the FreeEnergyWall PostProcessor handling the wetting boundary condition. +template<typename T, typename DESCRIPTOR> +class FreeEnergyWallProcessorGenerator2D : public PostProcessorGenerator2D<T, DESCRIPTOR> { +public: + FreeEnergyWallProcessorGenerator2D(int x0_, int x1_, int y0_, int y1_, + int discreteNormalX_, int discreteNormalY_, T addend_); + PostProcessor2D<T,DESCRIPTOR>* generate() const override; + PostProcessorGenerator2D<T,DESCRIPTOR>* clone() const override; +private: + int discreteNormalX; + int discreteNormalY; + T addend; +}; + + +/// PostProcessor for the chemical potential boundary condition in the free energy model. +/// The chemical potentials on the boundary are set equal to the chemical potential on the +/// fluid cell normal to the boundary. This is necessary because the coupling between the +/// lattices requires the calculation of the gradient of the chemical potential. +/// +/// It would be preferable if this were implemented as a lattice coupling that ran +/// between the chemical potential and force lattice couplings. However there is no +/// access to the discrete normals in lattice couplings. +template<typename T, typename DESCRIPTOR> +class FreeEnergyChemPotBoundaryProcessor2D : public LocalPostProcessor2D<T, DESCRIPTOR> { +public: + FreeEnergyChemPotBoundaryProcessor2D(int x0_, int x1_, int y0_, int y1_, + int discreteNormalX_, int discreteNormalY_, int latticeNumber_); + int extent() const override + { + return 2; + } + int extent(int whichDirection) const override + { + return 2; + } + void process(BlockLattice2D<T,DESCRIPTOR>& blockLattice) override; + void processSubDomain(BlockLattice2D<T,DESCRIPTOR>& blockLattice, + int x0_,int x1_,int y0_,int y1_ ) override; +private: + int x0, x1, y0, y1; + int discreteNormalX, discreteNormalY; + int latticeNumber; +}; + +/// Generator class for the FreeEnergyChemPotBoundary PostProcessor. +template<typename T,typename DESCRIPTOR> +class FreeEnergyChemPotBoundaryProcessorGenerator2D : public PostProcessorGenerator2D<T, DESCRIPTOR> { +public: + FreeEnergyChemPotBoundaryProcessorGenerator2D(int x0_, int x1_, int y0_, int y1_, + int discreteNormalX_, int discreteNormalY_, int latticeNumber_); + PostProcessor2D<T,DESCRIPTOR>* generate() const override; + PostProcessorGenerator2D<T,DESCRIPTOR>* clone() const override; +private: + int discreteNormalX; + int discreteNormalY; + int latticeNumber; +}; + + +/// PostProcessor for pressure / velocity outflow boundaries in the free energy model. +/// The density / order parameters are prescribed to the outflow nodes such that they +/// obey the local-velocity convective boundary condition given in Lou, Gou, Shi (2013). +template<typename T, typename DESCRIPTOR> +class FreeEnergyConvectiveProcessor2D : public LocalPostProcessor2D<T, DESCRIPTOR> { +public: + FreeEnergyConvectiveProcessor2D(int x0_, int x1_, int y0_, int y1_, + int discreteNormalX_, int discreteNormalY_); + int extent() const override + { + return 2; + } + int extent(int whichDirection) const override + { + return 2; + } + void process(BlockLattice2D<T,DESCRIPTOR>& blockLattice) override; + void processSubDomain(BlockLattice2D<T,DESCRIPTOR>& blockLattice, + int x0_,int x1_,int y0_,int y1_ ) override; +private: + int x0, x1, y0, y1; + int discreteNormalX, discreteNormalY; +}; + +/// Generator class for the FreeEnergyConvective post processor. +template<typename T, typename DESCRIPTOR> +class FreeEnergyConvectiveProcessorGenerator2D : public PostProcessorGenerator2D<T, DESCRIPTOR> { +public: + FreeEnergyConvectiveProcessorGenerator2D(int x0_, int x1_, int y0_, int y1_, + int discreteNormalX_, int discreteNormalY_); + PostProcessor2D<T,DESCRIPTOR>* generate() const override; + PostProcessorGenerator2D<T,DESCRIPTOR>* clone() const override; +private: + int discreteNormalX; + int discreteNormalY; +}; + +} + +#endif |