setPartialSlipBoundary2D.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/>
 *
 *  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
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*/
 
//This file contains the Partial Slip Boundary
//This is a new version of the Boundary, which only contains free floating functions
#ifndef SET_PARTIAL_SLIP_BOUNDARY_2D_HH
#define SET_PARTIAL_SLIP_BOUNDARY_2D_HH
 
 
#include "setPartialSlipBoundary2D.h"
 
 
namespace olb {
 
template<typename T, typename DESCRIPTOR>
void setPartialSlipBoundary(SuperLattice<T, DESCRIPTOR>& sLattice, T tuner, SuperGeometry<T,2>& superGeometry, int material)
{
  setPartialSlipBoundary<T,DESCRIPTOR>(sLattice, tuner, superGeometry.getMaterialIndicator(material));
}
 
template<typename T, typename DESCRIPTOR>
void setPartialSlipBoundary(SuperLattice<T, DESCRIPTOR>& sLattice, T tuner, FunctorPtr<SuperIndicatorF2D<T>>&& indicator)
{
  OstreamManager clout(std::cout, "setPartialSlipBoundary");
  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) {
    setPartialSlipBoundary<T,DESCRIPTOR>(sLattice.getBlock(iCloc),
                                         tuner, indicator->getBlockIndicatorF(iCloc), includeOuterCells);
  }
  //the addPoints2CommBC function is initialised inside setLocalVelocityBoundary2D.h/hh
  addPoints2CommBC<T,DESCRIPTOR>(sLattice, std::forward<decltype(indicator)>(indicator), _overlap);
}
 
template<typename T, typename DESCRIPTOR>
void setPartialSlipBoundary(BlockLattice<T,DESCRIPTOR>& block, T tuner, BlockIndicatorF2D<T>& indicator, bool includeOuterCells)
{
  OstreamManager clout(std::cout, "setPartialSlipBoundary");
  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)) {
      if (tuner < 0. || tuner > 1.) {
        clout << "Warning: Could not setPartialSlipBoundary (" << iX << ", " << iY << "), tuner must be between 0.1 and instead is=" << tuner <<", set to bounceBack" << std::endl;
        block.template defineDynamics<BounceBack>({iX, iY});
      }
      else {
        discreteNormal = indicator.getBlockGeometry().getStatistics().getType(iX, iY);
        if (discreteNormal[1]!=0 || discreteNormal[2]!=0) {
          //set partial slip boundary on indicated cells
          bool _output = false;
          if (_output) {
            clout << "setPartialSlipBoundary<" << discreteNormal[1] << ","<< discreteNormal[2] << ">("  << iX << ", "<< iX << ", " << iY << ", " << iY << " )" << std::endl;
          }
          PostProcessorGenerator2D<T, DESCRIPTOR>* postProcessor = new PartialSlipBoundaryProcessorGenerator2D<T, DESCRIPTOR>(tuner, iX, iX, iY, iY, discreteNormal[1], discreteNormal[2]);
          if (postProcessor) {
            block.addPostProcessor(*postProcessor);
          }
        }
        else {
          clout << "Warning: Could not setPartialSlipBoundary (" << iX << ", " << iY << "), discreteNormal=(" << discreteNormal[0] <<","<< discreteNormal[1] <<","<< discreteNormal[2] <<"), set to bounceBack" << std::endl;
          block.template defineDynamics<BounceBack>({iX, iY});
        }
      }
    }
  });
}
}//namespace olb
 
 
#endif