freeEnergyPostProcessor2D.h

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/*  This file is part of the OpenLB library
 *
 *  Copyright (C) 2018 Robin Trunk, Sam Avis
 *  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.
*/
 
#ifndef FREE_ENERGY_POST_PROCESSOR_2D_H
#define FREE_ENERGY_POST_PROCESSOR_2D_H
 
#include "core/blockStructure.h"
#include "core/postProcessing.h"
 
/* \file
 * PostProcessor classes organising the coupling between the lattices for the free energy
 * model.
 *
 * The PostProcessor for the calculation of the chemical potential needs to be applied first,
 * as the force relies on its results. This post processor should be assigned to the first
 * lattice with the second (and third) lattices given as partner lattices.
 * Then the force post processor should be assigned to the second lattice with the first (and
 * third) given as partner lattices. Between the execution of these post processors the
 * chemical potential should be communicated.
 */
 
namespace olb {
 
template<typename T, typename DESCRIPTOR>
class FreeEnergyChemicalPotentialCoupling2D : public LocalPostProcessor2D<T,DESCRIPTOR> {
public:
  FreeEnergyChemicalPotentialCoupling2D(int x0_, int x1_, int y0_, int y1_, T alpha_,
                                        T kappa1_, T kappa2_, T kappa3_,
                                        std::vector<BlockStructureD<2>*> partners_);
  FreeEnergyChemicalPotentialCoupling2D(T alpha_, T kappa1_, T kappa2_, T kappa3_,
                                        std::vector<BlockStructureD<2>*> partners_);
  int extent() const override
  {
    return 1;
  }
  int extent(int whichDirection) const override
  {
    return 1;
  }
  void process(BlockLattice<T,DESCRIPTOR>& blockLattice) override;
  void processSubDomain(BlockLattice<T,DESCRIPTOR>& blockLattice,
                        int x0_, int x1_, int y0_, int y1_) override;
private:
  using RHO_CACHE = descriptors::FIELD_BASE<3, 0, 0>;
  int x0, x1, y0, y1;
  T alpha, kappa1, kappa2, kappa3;
  std::vector<BlockStructureD<2>*> partners;
};
 
template<typename T, typename DESCRIPTOR>
class FreeEnergyForceCoupling2D : public LocalPostProcessor2D<T,DESCRIPTOR> {
public:
  FreeEnergyForceCoupling2D(int x0_, int x1_, int y0_, int y1_,
                            std::vector<BlockStructureD<2>*> partners_);
  FreeEnergyForceCoupling2D(std::vector<BlockStructureD<2>*> partners_);
  int extent() const override
  {
    return 1;
  }
  int extent(int whichDirection) const override
  {
    return 1;
  }
  void process(BlockLattice<T,DESCRIPTOR>& blockLattice) override;
  void processSubDomain(BlockLattice<T,DESCRIPTOR>& blockLattice,
                        int x0_, int x1_, int y0_, int y1_) override;
private:
  int x0, x1, y0, y1;
  std::vector<BlockStructureD<2>*> partners;
};
 
template<typename T, typename DESCRIPTOR>
class FreeEnergyInletOutletCoupling2D : public LocalPostProcessor2D<T,DESCRIPTOR> {
public:
  FreeEnergyInletOutletCoupling2D(int x0_, int x1_, int y0_, int y1_,
                                  std::vector<BlockStructureD<2>*> partners_);
  FreeEnergyInletOutletCoupling2D(std::vector<BlockStructureD<2>*> partners_);
  int extent() const override
  {
    return 0;
  }
  int extent(int whichDirection) const override
  {
    return 0;
  }
  void process(BlockLattice<T,DESCRIPTOR>& blockLattice) override;
  void processSubDomain(BlockLattice<T,DESCRIPTOR>& blockLattice,
                        int x0_, int x1_, int y0_, int y1_) override;
private:
  int x0, x1, y0, y1;
  std::vector<BlockStructureD<2>*> partners;
};
 
template<typename T, typename DESCRIPTOR>
class FreeEnergyDensityOutletCoupling2D : public LocalPostProcessor2D<T,DESCRIPTOR> {
public:
  FreeEnergyDensityOutletCoupling2D(int x0_, int x1_, int y0_, int y1_, T rho_,
                                    std::vector<BlockStructureD<2>*> partners_);
  FreeEnergyDensityOutletCoupling2D(T rho_, std::vector<BlockStructureD<2>*> partners_);
  int extent() const override
  {
    return 0;
  }
  int extent(int whichDirection) const override
  {
    return 0;
  }
  void process(BlockLattice<T,DESCRIPTOR>& blockLattice) override;
  void processSubDomain(BlockLattice<T,DESCRIPTOR>& blockLattice,
                        int x0_, int x1_, int y0_, int y1_) override;
private:
  int x0, x1, y0, y1;
  T rho;
  std::vector<BlockStructureD<2>*> partners;
};
 
 
template<typename T, typename DESCRIPTOR>
class FreeEnergyChemicalPotentialGenerator2D : public LatticeCouplingGenerator2D<T,DESCRIPTOR> {
public:
  FreeEnergyChemicalPotentialGenerator2D(int x0_, int x1_, int y0_, int y1_, T alpha_,
                                         T kappa1_, T kappa2_);
  FreeEnergyChemicalPotentialGenerator2D(T alpha_, T kappa1_, T kappa2_);
  FreeEnergyChemicalPotentialGenerator2D(int x0_, int x1_, int y0_, int y1_, T alpha_,
                                         T kappa1_, T kappa2_, T kappa3_);
  FreeEnergyChemicalPotentialGenerator2D(T alpha_, T kappa1_, T kappa2_, T kappa3_);
  PostProcessor2D<T,DESCRIPTOR>* generate(std::vector<BlockStructureD<2>*> partners) const override;
  LatticeCouplingGenerator2D<T,DESCRIPTOR>* clone() const override;
private:
  T alpha, kappa1, kappa2, kappa3;
};
 
template<typename T, typename DESCRIPTOR>
class FreeEnergyForceGenerator2D : public LatticeCouplingGenerator2D<T,DESCRIPTOR> {
public:
  FreeEnergyForceGenerator2D(int x0_, int x1_, int y0_, int y1_ );
  FreeEnergyForceGenerator2D( );
  PostProcessor2D<T,DESCRIPTOR>* generate(std::vector<BlockStructureD<2>*> partners) const override;
  LatticeCouplingGenerator2D<T,DESCRIPTOR>* clone() const override;
};
 
template<typename T, typename DESCRIPTOR>
class FreeEnergyInletOutletGenerator2D : public LatticeCouplingGenerator2D<T,DESCRIPTOR> {
public:
  FreeEnergyInletOutletGenerator2D(int x0_, int x1_, int y0_, int y1_);
  FreeEnergyInletOutletGenerator2D( );
  PostProcessor2D<T,DESCRIPTOR>* generate(std::vector<BlockStructureD<2>*> partners) const override;
  LatticeCouplingGenerator2D<T,DESCRIPTOR>* clone() const override;
};
 
template<typename T, typename DESCRIPTOR>
class FreeEnergyDensityOutletGenerator2D : public LatticeCouplingGenerator2D<T,DESCRIPTOR> {
public:
  FreeEnergyDensityOutletGenerator2D(int x0_, int x1_, int y0_, int y1_, T rho_);
  FreeEnergyDensityOutletGenerator2D(T rho_);
  PostProcessor2D<T,DESCRIPTOR>* generate(std::vector<BlockStructureD<2>*> partners) const override;
  LatticeCouplingGenerator2D<T,DESCRIPTOR>* clone() const override;
private:
  T rho;
};
 
}
 
#endif