/usr/include/palabos/latticeBoltzmann/advectionDiffusionMomentTemplates2D.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 | /* 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_2D_H
#define ADVECTION_DIFFUSION_MOMENTS_TEMPLATES_2D_H
#include "latticeBoltzmann/advectionDiffusionLattices.h"
namespace plb {
// This structure forwards the calls to the appropriate helper class
template<typename T>
struct advectionDiffusionMomentTemplatesImpl<T,descriptors::D2Q5DescriptorBase<T> >
{
typedef descriptors::D2Q5DescriptorBase<T> Descriptor;
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);
jEq[0] = rho * u[0];
jEq[1] = rho * u[1];
}
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)
{
rhoBar = momentTemplatesImpl<T,Descriptor>::get_rhoBar(f);
T rho = Descriptor::fullRho(rhoBar);
jEq[0] = rho * u[0];
jEq[1] = rho * u[1];
jNeq[0] = - f[1] + f[3] - jEq[0];
jNeq[1] = - f[2] + f[4] - jEq[1];
}
static void get_jEq(const T& rhoBar, Array<T,Descriptor::d>& jEq, const T *u)
{
T rho = Descriptor::fullRho(rhoBar);
jEq[0] = rho * u[0];
jEq[1] = rho * u[1];
}
}; // struct advectionDiffusionMomentTemplatesImpl
// This structure forwards the calls to the appropriate helper class
template<typename T>
struct advectionDiffusionMomentTemplatesImpl<T,descriptors::D2Q9DescriptorBase<T> >
{
typedef descriptors::D2Q9DescriptorBase<T> D;
static void get_rhoBar_jEq(Array<T,D::q> const& f, T& rhoBar,
Array<T,D::d>& jEq, const T u[D::d] )
{
rhoBar = momentTemplatesImpl<T,D>::get_rhoBar(f);
T rho = D::fullRho(rhoBar);
jEq[0] = rho * u[0];
jEq[1] = rho * u[1];
}
static void get_jEq(const T& rhoBar, Array<T,D::d>& jEq, const T *u)
{
T rho = D::fullRho(rhoBar);
jEq[0] = rho * u[0];
jEq[1] = rho * u[1];
}
static void get_rhoBar_jEq_jNeq(Array<T,D::q> const& f, T& rhoBar,
Array<T,D::d>& jEq, Array<T,D::d>& jNeq,
const T *u)
{
momentTemplatesImpl<T,D>::get_rhoBar_j(f, rhoBar, jNeq );
T rho = D::fullRho(rhoBar);
jEq[0] = rho * u[0];
jEq[1] = rho * u[1];
jNeq[0] -= jEq[0]; jNeq[1] -= jEq[1];
}
}; // struct advectionDiffusionMomentTemplatesImpl
} // namespace plb
#endif
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