source: ThirdParty/vmg/src/discretization/discretization_poisson_fv.hpp@ 33a694

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Last change on this file since 33a694 was 7faa5c, checked in by Frederik Heber <heber@…>, 8 years ago

Merge commit 'de061d9d851257a04e924d4472df4523d33bb08b' as 'ThirdParty/vmg'

  • Property mode set to 100644
File size: 1.8 KB
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1/*
2 * vmg - a versatile multigrid solver
3 * Copyright (C) 2012 Institute for Numerical Simulation, University of Bonn
4 *
5 * vmg is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * vmg is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19/**
20 * @file discretization_poisson_fv.hpp
21 * @author Julian Iseringhausen <isering@ins.uni-bonn.de>
22 * @date Mon Apr 18 13:03:47 2011
23 *
24 * @brief Finite volume discretization for the Poisson
25 * equation. Absolutely equivalent to the finite
26 * difference discretization unless you use
27 * hierarchically coarsened grids.
28 *
29 */
30
31#ifndef DISCRETIZATION_POISSON_FV_HPP_
32#define DISCRETIZATION_POISSON_FV_HPP_
33
34#include "base/discretization.hpp"
35#include "base/helper.hpp"
36
37namespace VMG
38{
39
40class DiscretizationPoissonFV : public Discretization
41{
42public:
43 DiscretizationPoissonFV(const int& order) :
44 Discretization(order)
45 {
46 InitDiscretizationPoissonFV();
47 }
48
49 vmg_float OperatorPrefactor(const Grid& grid) const
50 {
51 return 1.0 / Helper::pow_2(grid.Extent().MeshWidth().Max());
52 }
53
54 void ModifyRightHandSide();
55
56private:
57 void InitDiscretizationPoissonFV();
58 void SetInnerBoundaryCompute(Grid& sol_f, Grid& rhs_f, Grid& sol_c) const;
59};
60
61}
62
63#endif /* DISCRETIZATION_POISSON_FV_HPP_ */
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