/usr/include/palabos/latticeBoltzmann/advectionDiffusionMomentTemplates.h is in libplb-dev 1.5~r1+repack1-3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | /* This file is part of the Palabos library.
*
* Copyright (C) 2011-2015 FlowKit Sarl
* Route d'Oron 2
* 1010 Lausanne, Switzerland
* E-mail contact: contact@flowkit.com
*
* The most recent release of Palabos can be downloaded at
* <http://www.palabos.org/>
*
* The library Palabos is free software: you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* The library 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* Main author: Orestis Malaspinas
*/
/** \file
* Helper functions for the computation of velocity moments for the f's.
* This file is all about efficiency. The generic template code is specialized
* for commonly used Lattices, so that a maximum performance can be taken out
* of each case.
*/
#ifndef ADVECTION_DIFFUSION_MOMENTS_TEMPLATES_H
#define ADVECTION_DIFFUSION_MOMENTS_TEMPLATES_H
#include "core/globalDefs.h"
#include "core/cell.h"
#include "core/util.h"
#include "latticeBoltzmann/geometricOperationTemplates.h"
#include "latticeBoltzmann/roundOffPolicy.h"
#include "latticeBoltzmann/momentTemplates.h"
namespace plb {
template<typename T, class Descriptor> struct advectionDiffusionMomentTemplatesImpl;
// This structure forwards the calls to the appropriate helper class
template<typename T, template<typename U> class Descriptor>
struct advectionDiffusionMomentTemplates {
static void get_rhoBar_jEq(Cell<T,Descriptor> const& cell, T& rhoBar,
Array<T,Descriptor<T>::d>& jEq)
{
advectionDiffusionMomentTemplatesImpl<T,typename Descriptor<T>::BaseDescriptor>
::get_rhoBar_jEq(cell.getRawPopulations(), rhoBar, jEq,
cell.getExternal(Descriptor<T>::ExternalField::velocityBeginsAt));
}
static void get_jEq(Cell<T,Descriptor> const& cell, const T& rhoBar,
Array<T,Descriptor<T>::d>& jEq)
{
advectionDiffusionMomentTemplatesImpl<T,typename Descriptor<T>::BaseDescriptor>
::get_jEq(rhoBar, jEq, cell.getExternal(Descriptor<T>::ExternalField::velocityBeginsAt));
}
static void get_rhoBar_jEq_jNeq(Cell<T,Descriptor> const& cell, T& rhoBar,
Array<T,Descriptor<T>::d>& jEq, Array<T,Descriptor<T>::d>& jNeq )
{
advectionDiffusionMomentTemplatesImpl<T,typename Descriptor<T>::BaseDescriptor>
::get_rhoBar_jEq_jNeq(cell.getRawPopulations(), rhoBar, jEq, jNeq,
cell.getExternal(Descriptor<T>::ExternalField::velocityBeginsAt));
}
}; // struct advectionDiffusionMomentTemplates
// This structure forwards the calls to the appropriate helper class
template<typename T, class Descriptor>
struct advectionDiffusionMomentTemplatesImpl
{
static void get_rhoBar_jEq(Array<T,Descriptor::q> const& f, T& rhoBar,
Array<T,Descriptor::d>& jEq, const T u[Descriptor::d] )
{
rhoBar = momentTemplatesImpl<T,Descriptor>::get_rhoBar(f);
T rho = Descriptor::fullRho(rhoBar);
for (plint iD = 0; iD < Descriptor::d; ++iD)
{
jEq[iD] = rho * u[iD];
}
}
static void get_jEq(const T& rhoBar, Array<T,Descriptor::d>& jEq, const T u[Descriptor::d] )
{
T rho = Descriptor::fullRho(rhoBar);
for (plint iD = 0; iD < Descriptor::d; ++iD)
{
jEq[iD] = rho * u[iD];
}
}
static void get_rhoBar_jEq_jNeq(Array<T,Descriptor::q> const& f, T& rhoBar,
Array<T,Descriptor::d>& jEq, Array<T,Descriptor::d>& jNeq,
const T u[Descriptor::d])
{
rhoBar = momentTemplatesImpl<T,Descriptor>::get_rhoBar(f);
T rho = Descriptor::fullRho(rhoBar);
Array<T,Descriptor::d> jReal; //sum f_i*c_i
for (plint iD = 0; iD < Descriptor::d; ++iD)
{
jReal[iD] = (T)Descriptor::c[0][iD] * f[0];
for (plint iPop = 1; iPop < Descriptor::q; ++iPop)
{
jReal[iD] += (T)Descriptor::c[iPop][iD] * f[iPop];
}
jEq[iD] = rho * u[iD];
jNeq[iD] = jReal[iD] - jEq[iD];
}
}
}; // struct advectionDiffusionMomentTemplatesImpl
} // namespace plb
#include "latticeBoltzmann/advectionDiffusionMomentTemplates2D.h"
#include "latticeBoltzmann/advectionDiffusionMomentTemplates3D.h"
#endif
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