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/* 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/>
*
* 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.
*/
/** \file
* Implementation of boundary cell dynamics -- generic implementation.
*/
#ifndef ADE_MOMENTA_ON_BOUNDARIES_HH
#define ADE_MOMENTA_ON_BOUNDARIES_HH
#include <limits>
#include "advectionDiffusionMomentaOnBoundaries.h"
#include "dynamics/lbHelpers.h"
#include "dynamics/firstOrderLbHelpers.h"
namespace olb {
////////////////////// Class AdvectionDiffusionBM //////////////////////
template<typename T, typename DESCRIPTOR, int direction, int orientation>
RegularizedTemperatureBM<T,DESCRIPTOR,direction,orientation>::RegularizedTemperatureBM(const T temperature) :
AdvectionDiffusionBulkMomenta<T,DESCRIPTOR>(),
_temperature(temperature)
{
}
template<typename T, typename DESCRIPTOR, int direction, int orientation>
T RegularizedTemperatureBM<T,DESCRIPTOR,direction,orientation>::computeRho( Cell<T,DESCRIPTOR> const& cell ) const
{
return _temperature;
}
template<typename T, typename DESCRIPTOR, int direction, int orientation>
void RegularizedTemperatureBM<T,DESCRIPTOR,direction,orientation>::computeJ( Cell<T,DESCRIPTOR> const& cell, T j[DESCRIPTOR::d] ) const
{
const T* u = cell.template getFieldPointer<descriptors::VELOCITY>();
computeJneq( cell, j );
for (int iD=0; iD<DESCRIPTOR::d; ++iD) {
j[iD] += _temperature * u[iD];
}
}
template<typename T, typename DESCRIPTOR, int direction, int orientation>
void RegularizedTemperatureBM<T,DESCRIPTOR,direction,orientation>::computeJneq( Cell<T,DESCRIPTOR> const& cell, T jNeq[DESCRIPTOR::d] ) const
{
std::vector<int> const& onWallIndices = util::subIndex<DESCRIPTOR, direction, 0>();
std::vector<int> const& normalIndices = util::subIndex<DESCRIPTOR, direction, orientation>();
const T* u = cell.template getFieldPointer<descriptors::VELOCITY>();
T jNeqOnWall[DESCRIPTOR::d], jNeqNormal[DESCRIPTOR::d];
for (int iD=0; iD<DESCRIPTOR::d; ++iD) {
jNeqOnWall[iD] = T();
jNeqNormal[iD] = T();
}
for (unsigned fIndex=0; fIndex<onWallIndices.size(); ++fIndex) {
for (int iD=0; iD<DESCRIPTOR::d; ++iD) {
jNeqOnWall[iD] += (cell[onWallIndices[fIndex]] - lbHelpers<T,DESCRIPTOR>::equilibriumFirstOrder(onWallIndices[fIndex],_temperature,u)) * descriptors::c<DESCRIPTOR>(onWallIndices[fIndex],iD);
}
}
for (unsigned fIndex=0; fIndex<normalIndices.size(); ++fIndex) {
for (int iD=0; iD<DESCRIPTOR::d; ++iD) {
jNeqNormal[iD] += (cell[normalIndices[fIndex]]-lbHelpers<T,DESCRIPTOR>::equilibriumFirstOrder(normalIndices[fIndex],_temperature,u)) * descriptors::c<DESCRIPTOR>(normalIndices[fIndex],iD);
}
}
for (int iD=0; iD<DESCRIPTOR::d; ++iD) {
jNeq[iD] = jNeqOnWall[iD] + (T)2 * jNeqNormal[iD];
}
}
template<typename T, typename DESCRIPTOR, int direction, int orientation>
void RegularizedTemperatureBM<T,DESCRIPTOR,direction,orientation>::defineRho( Cell<T,DESCRIPTOR>& cell, T rho )
{
_temperature = rho;
}
template<typename T, typename DESCRIPTOR, int direction, int orientation>
void RegularizedTemperatureBM<T,DESCRIPTOR,direction,orientation>::defineRhoU( Cell<T,DESCRIPTOR>& cell, T rho, const T u[DESCRIPTOR::d])
{
_temperature = rho;
T *u_ = cell.template getFieldPointer<descriptors::VELOCITY>();
for (int iD = 0; iD < DESCRIPTOR::d; ++iD) {
u_[iD] = u[iD];
}
for (int iPop = 0; iPop < DESCRIPTOR::q; ++iPop) {
cell[iPop] = lbHelpers<T, DESCRIPTOR>::equilibriumFirstOrder( iPop, rho, u );
}
}
template<typename T, typename DESCRIPTOR, int direction, int orientation>
RegularizedHeatFluxBM<T,DESCRIPTOR,direction,orientation>::RegularizedHeatFluxBM(T *heatFlux) :
AdvectionDiffusionBulkMomenta<T,DESCRIPTOR>()
{
for (int iDim = 0; iDim < DESCRIPTOR::d; iDim++) {
if (heatFlux == nullptr)
_heatFlux[iDim] = T();
else
_heatFlux[iDim] = heatFlux[iDim];
}
}
template<typename T, typename DESCRIPTOR, int direction, int orientation>
T RegularizedHeatFluxBM<T,DESCRIPTOR,direction,orientation>::computeRho( Cell<T,DESCRIPTOR> const& cell ) const
{
std::vector<int> const& onWallIndices = util::subIndex<DESCRIPTOR, direction, 0>();
std::vector<int> const& normalIndices = util::subIndex<DESCRIPTOR, direction, orientation>();
const T* u = cell.template getFieldPointer<descriptors::VELOCITY>();
T rhoOnWall = T();
for (unsigned fIndex=0; fIndex<onWallIndices.size(); ++fIndex) {
rhoOnWall += cell[onWallIndices[fIndex]];
}
T rhoNormal = T();
for (unsigned fIndex=0; fIndex<normalIndices.size(); ++fIndex) {
rhoNormal += cell[normalIndices[fIndex]];
}
T rho =((T)2*rhoNormal+rhoOnWall+(T)1 - (T)orientation*_heatFlux[direction]) /
((T)1+(T)orientation*u[direction]);
return rho;
}
template<typename T, typename DESCRIPTOR, int direction, int orientation>
void RegularizedHeatFluxBM<T,DESCRIPTOR,direction,orientation>::computeJ( Cell<T,DESCRIPTOR> const& cell, T j[DESCRIPTOR::d] ) const
{
T temperature = computeRho(cell);
const T* u = cell.template getFieldPointer<descriptors::VELOCITY>();
for (int iD=0; iD<DESCRIPTOR::d; ++iD) {
j[iD] = _heatFlux[iD] + temperature * u[iD];
}
}
template<typename T, typename DESCRIPTOR, int direction, int orientation>
void RegularizedHeatFluxBM<T,DESCRIPTOR,direction,orientation>::computeJneq( Cell<T,DESCRIPTOR> const& cell, T jNeq[DESCRIPTOR::d] ) const
{
for (int iD=0; iD<DESCRIPTOR::d; ++iD) {
jNeq[iD] = _heatFlux[iD];
}
}
} // namespace olb
#endif
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