latticePSMPhysForce3D.hh

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/*  This file is part of the OpenLB library
 *
 *  Copyright (C) 2012 Lukas Baron, Tim Dornieden, Mathias J. Krause,
 *  Albert Mink
 *  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 LATTICE_PSM_PHYS_FORCE_3D_HH
#define LATTICE_PSM_PHYS_FORCE_3D_HH
 
#include<vector>    // for generic i/o
#include<cmath>     // for lpnorm
#include<math.h>
 
#include "latticePSMPhysForce3D.h"
#include "superBaseF3D.h"
#include "functors/analytical/indicator/indicatorBaseF3D.h"
#include "indicator/superIndicatorF3D.h"
#include "dynamics/lbm.h"  // for computation of lattice rho and velocity
#include "geometry/superGeometry.h"
#include "blockBaseF3D.h"
#include "communication/mpiManager.h"
#include "utilities/vectorHelpers.h"
 
namespace olb {
 
template<typename T, typename DESCRIPTOR>
SuperLatticePSMPhysForce3D<T, DESCRIPTOR>::SuperLatticePSMPhysForce3D(
  SuperLattice<T, DESCRIPTOR>&     sLattice,
  const UnitConverter<T,DESCRIPTOR>& converter)
  : SuperLatticePhysF3D<T, DESCRIPTOR>(sLattice, converter, 3)
{
  this->getName() = "PSMPhysForce";
  for (int iC = 0; iC < this->_sLattice.getLoadBalancer().size(); ++iC) {
    this->_blockF.emplace_back(
      new BlockLatticePSMPhysForce3D<T, DESCRIPTOR>(
        this->_sLattice.getBlock(iC),
        this->_converter));
  }
}
 
template <typename T, typename DESCRIPTOR>
BlockLatticePSMPhysForce3D<T,DESCRIPTOR>::BlockLatticePSMPhysForce3D(
  BlockLattice<T,DESCRIPTOR>& blockLattice,
  const UnitConverter<T,DESCRIPTOR>&     converter)
  : BlockLatticePhysF3D<T,DESCRIPTOR>(blockLattice, converter, 3)
{
  this->getName() = "physPSMForce";
}
 
template<typename T, typename DESCRIPTOR>
bool BlockLatticePSMPhysForce3D<T, DESCRIPTOR>::operator()(T output[], const int input[])
{
  for (int i = 0; i < this->getTargetDim(); ++i) {
    output[i] = T();
  }
 
  T epsilon = 1. - this->_blockLattice.get(input).template getField<descriptors::POROSITY>();
 
  //if ((epsilon > 1e-5 && epsilon < 1 - 1e-5)) {
  if ((epsilon > 1e-5)) {
    T rho, u[DESCRIPTOR::d], u_s[DESCRIPTOR::d];
 
    for (int i = 0; i < DESCRIPTOR::d; i++) {
      u_s[i] = this->_blockLattice.get(input).template getFieldComponent<descriptors::VELOCITY_SOLID>(i);
    }
    T paramA = this->_converter.getLatticeRelaxationTime() - 0.5;
    // speed up paramB
    T paramB = (epsilon * paramA) / ((1. - epsilon) + paramA);
 
    T omega_s;
    T omega = 1. / this->_converter.getLatticeRelaxationTime();
 
    this->_blockLattice.get(input).computeRhoU(rho, u);
 
    const T uSqr_s = util::normSqr<T,DESCRIPTOR::d>(u_s);
    T uSqr = util::normSqr<T,DESCRIPTOR::d>(u);
    for (int iPop=0; iPop < DESCRIPTOR::q; ++iPop) {
      //switch (mode) {
      //case M2:
        omega_s = (lbm< DESCRIPTOR>::equilibrium(iPop, rho, u_s, uSqr_s)
                   - this->_blockLattice.get(input[0], input[1], input[2])[iPop])
                  + (1 - omega)
                  * (this->_blockLattice.get(input[0], input[1], input[2])[iPop]
                     - lbm< DESCRIPTOR>::equilibrium(iPop, rho, u, uSqr));
      //  break;
      //case M3:
      //  omega_s =
      //    (this->_blockLattice.get(input[0], input[1], input[2])[descriptors::opposite<DESCRIPTOR>(iPop)]
      //     - lbm< DESCRIPTOR>::equilibrium(
      //       descriptors::opposite<DESCRIPTOR>(iPop), rho, u_s, uSqr_s))
      //    - (this->_blockLattice.get(input[0], input[1], input[2])[iPop]
      //       - lbm< DESCRIPTOR>::equilibrium(iPop, rho, u_s, uSqr_s));
      //}
 
      for (int i = 0; i < this->getTargetDim(); ++i) {
        output[i] -= descriptors::c<DESCRIPTOR>(iPop,i) * omega_s;
      }
    }
 
    for (int i = 0; i < this->getTargetDim(); ++i) {
      output[i] = this->_converter.getPhysForce(output[i] * paramB);
    }
  }
  return true;
}
 
}
#endif