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/* This file is part of the OpenLB library
*
* Copyright (C) 2017-2019 Albert Mink, Adrian Kummerlaender
* 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
* -- header file
*/
#ifndef RTLBM_DESCRIPTORS_H
#define RTLBM_DESCRIPTORS_H
#include "latticeDescriptors.h"
namespace olb {
namespace descriptors {
namespace tag {
struct RTLBM : public CATEGORY, public DESCRIPTOR_TAG { };
}
using D3Q7DescriptorRTLBM = D3Q7<>;
using D3Q19DescriptorRTLBM = D3Q19<>;
using D3Q27DescriptorRTLBM = D3Q27<tag::RTLBM>;
namespace rtlbm_data {
using utilities::Fraction;
template <unsigned D, unsigned Q>
constexpr Fraction t[Q] = {};
template <>
constexpr Fraction t<3,27>[27] = {
0,
{1, 21}, {1, 21}, {1, 21},
{4, 105}, {4, 105}, {4, 105},
{4, 105}, {4, 105}, {4, 105},
{9, 280}, {9, 280}, {9, 280}, {9, 280},
{1, 21}, {1, 21}, {1, 21},
{4, 105}, {4, 105}, {4, 105},
{4, 105}, {4, 105}, {4, 105},
{9, 280}, {9, 280}, {9, 280}, {9, 280}
};
template<typename T>
constexpr T norm_c_3_27[27] = {
0.0,
1.0, 1.0, 1.0,
1.41421356237, 1.41421356237, 1.41421356237,
1.41421356237, 1.41421356237, 1.41421356237,
1.73205080757, 1.73205080757, 1.73205080757, 1.73205080757,
1.0, 1.0, 1.0,
1.41421356237, 1.41421356237, 1.41421356237,
1.41421356237, 1.41421356237, 1.41421356237,
1.73205080757, 1.73205080757, 1.73205080757, 1.73205080757
};
}
template <typename T, unsigned D, unsigned Q>
constexpr T t(unsigned iPop, tag::RTLBM)
{
return rtlbm_data::t<D,Q>[iPop].template as<T>();
}
template <typename T, typename DESCRIPTOR>
constexpr T norm_c(unsigned iPop)
{
// Hacky but should hold until we implemented a solution for abstracting T in this setting
static_assert(
DESCRIPTOR::d == 3 && DESCRIPTOR::q == 27 && DESCRIPTOR::template provides<tag::RTLBM>(),
"DESCRIPTOR is D3Q27 RTLBM"
);
return rtlbm_data::norm_c_3_27<T>[iPop];
}
} // namespace descriptors
} // namespace olb
#endif
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