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comparison test/SbpOperators/boundary_conditions/sat_test.jl @ 1603:fca4a01d60c9 feature/boundary_conditions

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Remove module BoundaryConditions, moving its content to SbpOperators
author Vidar Stiernström <vidar.stiernstrom@gmail.com>
date Tue, 04 Jun 2024 16:46:14 -0700
parents test/BoundaryConditions/sat_test.jl@3e7438e2a033
children 471a948cd2b2
comparison
equal deleted inserted replaced
1602:3e7438e2a033 1603:fca4a01d60c9
1 using Test
2
3 using Sbplib.Grids
4 using Sbplib.LazyTensors
5 using Sbplib.SbpOperators
6
7 stencil_set = read_stencil_set(sbp_operators_path()*"standard_diagonal.toml"; order = 4)
8
9 struct MockOp end
10
11 function SbpOperators.sat_tensors(op::MockOp, g::Grid, bc::DirichletCondition; a = 1.)
12 e = boundary_restriction(g, stencil_set, boundary(bc))
13 L = a*e
14 sat_op = e'
15 return sat_op, L
16 end
17
18 function SbpOperators.sat_tensors(op::MockOp, g::Grid, bc::NeumannCondition)
19 e = boundary_restriction(g, stencil_set, boundary(bc))
20 d = normal_derivative(g, stencil_set, boundary(bc))
21 L = d
22 sat_op = e'
23 return sat_op, L
24 end
25
26 @testset "sat" begin
27 op = MockOp()
28 @testset "1D" begin
29 grid = equidistant_grid(0., 1., 11)
30 l, r = boundary_identifiers(grid)
31 u = eval_on(grid, x-> 1. + 2x^2)
32 dc = DirichletCondition(1.0, l)
33 g_l = discretize_data(grid, dc)
34 SAT_l = sat(op, grid, dc)
35 @test SAT_l(u, g_l) ≈ zeros((size(grid))) atol = 1e-13
36
37 nc = NeumannCondition(4.0, r)
38 g_r = discretize_data(grid, nc)
39 SAT_r = sat(op, grid, nc)
40 @test SAT_r(u, g_r) ≈ zeros((size(grid))) atol = 1e-13
41 end
42 @testset "2D" begin
43 grid = equidistant_grid((0.,0.), (1.,1.), 11, 13)
44 W, E, S, N = boundary_identifiers(grid)
45 u = eval_on(grid, (x,y) -> x+y^2)
46
47 dc_W = DirichletCondition(1.0, W)
48 SAT_W = sat(op, grid, dc_W)
49 g_W = discretize_data(grid, dc_W)
50 r_W = zeros(size(grid))
51 r_W[1,:] .= map(y -> (y^2-1.), range(0., 1., length=13))
52 @test SAT_W(u, g_W) ≈ r_W atol = 1e-13
53
54 dc_E = DirichletCondition(2, E)
55 SAT_E = sat(op, grid, dc_E; a = 2.)
56 g_E = discretize_data(grid, dc_E)
57 r_E = zeros(size(grid))
58 r_E[end,:] .= map(y -> (2*(1. + y^2)-2.), range(0., 1., length=13))
59 @test SAT_E(u, g_E) ≈ r_E atol = 1e-13
60
61 nc_S = NeumannCondition(.0, S)
62 SAT_S = sat(op, grid, nc_S)
63 g_S = discretize_data(grid, nc_S)
64 @test SAT_S(u, g_S) ≈ zeros(size(grid)) atol = 1e-13
65
66 nc_N = NeumannCondition(2.0, N)
67 SAT_N = sat(op, grid, nc_N)
68 g_N = discretize_data(grid, nc_N)
69 @test SAT_N(u, g_N) ≈ zeros(size(grid)) atol = 1e-13
70 end
71 end