setZouHePressureBoundary2D.hh

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/*  This file is part of the OpenLB library
 *
 *  Copyright (C) 2020 Alexander Schulz
 *  E-mail contact: info@openlb.net
 *  The most recent release of OpenLB can be downloaded at
 *  <http://www.openlb.net/>
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*/
 
//This file contains the ZouHe Pressure Boundary
//This is a new version of the Boundary, which only contains free floating functions
 
#ifndef SET_ZOUHE_PRESSURE_BOUNDARY_2D_HH
#define SET_ZOUHE_PRESSURE_BOUNDARY_2D_HH
 
#include "setZouHePressureBoundary2D.h"
 
namespace olb {
 
template<typename T, typename DESCRIPTOR, class MixinDynamics>
void setZouHePressureBoundary(SuperLattice<T, DESCRIPTOR>& sLattice,T omega, SuperGeometry<T,2>& superGeometry, int material)
{
  setZouHePressureBoundary<T,DESCRIPTOR, MixinDynamics>(sLattice, omega, superGeometry.getMaterialIndicator(material));
}
 
template<typename T, typename DESCRIPTOR, class MixinDynamics>
void setZouHePressureBoundary(SuperLattice<T, DESCRIPTOR>& sLattice, T omega, FunctorPtr<SuperIndicatorF2D<T>>&& indicator)
{
  OstreamManager clout(std::cout, "setZouHePressureBoundary2D");
  bool includeOuterCells = false;
  int _overlap = 1;
  if (indicator->getSuperGeometry().getOverlap() == 1) {
    includeOuterCells = true;
    clout << "WARNING: overlap == 1, boundary conditions set on overlap despite unknown neighbor materials" << std::endl;
  }
  for (int iCloc = 0; iCloc < sLattice.getLoadBalancer().size(); ++iCloc) {
    setZouHePressureBoundary<T,DESCRIPTOR, MixinDynamics>(sLattice.getBlock(iCloc),omega,
        indicator->getBlockIndicatorF(iCloc), includeOuterCells);
  }
  addPoints2CommBC(sLattice, std::forward<decltype(indicator)>(indicator), _overlap);
}
 
 
template<typename T, typename DESCRIPTOR, class MixinDynamics>
void setZouHePressureBoundary(BlockLattice<T,DESCRIPTOR>& block, T omega,BlockIndicatorF2D<T>& indicator, bool includeOuterCells)
{
  using namespace boundaryhelper;
  auto& blockGeometryStructure = indicator.getBlockGeometry();
  const int margin = includeOuterCells ? 0 : 1;
  std::vector<int> discreteNormal(3, 0);
  blockGeometryStructure.forSpatialLocations([&](auto iX, auto iY) {
    if (blockGeometryStructure.getNeighborhoodRadius({iX, iY}) >= margin
        && indicator(iX, iY)) {
      Dynamics<T, DESCRIPTOR>* dynamics = nullptr;
      PostProcessorGenerator2D<T, DESCRIPTOR>* postProcessor = nullptr;
      discreteNormal = indicator.getBlockGeometry().getStatistics().getType(iX, iY);
      if (discreteNormal[0] == 0) {
        dynamics = block.getDynamics(DirectionOrientationMixinDynamicsForDirectionOrientationMomenta<T,DESCRIPTOR,
          ZouHeDynamics,MixinDynamics,momenta::BasicDirichletPressureBoundaryTuple
        >::construct(Vector<int,2>(discreteNormal.data() + 1)));
        dynamics->getParameters(block).template set<descriptors::OMEGA>(omega);
        setBoundary(block, iX,iY, dynamics, postProcessor);
      }
    }
  });
}
 
 
}//namespace olb
 
#endif