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use iterators for SAT

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Magnus Ulimoen
2019-12-12 18:41:41 +01:00
parent f9b715378f
commit 43dfc6f05f
1 changed files with 65 additions and 50 deletions
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115
src/maxwell.rs
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@@ -275,62 +275,69 @@ fn SAT_characteristics<SBP: SbpOperator>(k: &mut Field, y: &Field, grid: &Grid<S
]
}
let hinv = 1.0 / (SBP::h()[0] / (nx - 1) as f32);
let g = y.slice(s![.., .., 0]);
let v = y.slice(s![.., .., nx - 1]);
{
// East boundary
let mut k = k.slice_mut(s![.., .., nx - 1]);
for j in 0..ny {
let hinv = 1.0 / (SBP::h()[0] / (nx - 1) as f32);
let g = y.slice(s![.., .., 0]);
for ((((mut k, v), g), &kx), &ky) in k
.slice_mut(s![.., .., nx - 1])
.gencolumns_mut()
.into_iter()
.zip(y.slice(s![.., .., nx - 1]).gencolumns())
.zip(g.gencolumns())
.zip(grid.detj_dxi_dx.slice(s![.., nx - 1]))
.zip(grid.detj_dxi_dy.slice(s![.., nx - 1]))
{
// East boundary, positive flux
let tau = -1.0;
let v = (v[(0, j)], v[(1, j)], v[(2, j)]);
let g = (g[(0, j)], g[(1, j)], g[(2, j)]);
let kx = grid.detj_dxi_dx[(j, nx - 1)];
let ky = grid.detj_dxi_dy[(j, nx - 1)];
let v = (v[0], v[1], v[2]);
let g = (g[0], g[1], g[2]);
let plus = positive_flux(kx, ky);
k[(0, j)] += tau
k[0] += tau
* hinv
* (plus[0][0] * (v.0 - g.0) + plus[0][1] * (v.1 - g.1) + plus[0][2] * (v.2 - g.2));
k[(1, j)] += tau
k[1] += tau
* hinv
* (plus[1][0] * (v.0 - g.0) + plus[1][1] * (v.1 - g.1) + plus[1][2] * (v.2 - g.2));
k[(2, j)] += tau
k[2] += tau
* hinv
* (plus[2][0] * (v.0 - g.0) + plus[2][1] * (v.1 - g.1) + plus[2][2] * (v.2 - g.2));
}
}
{
// West boundary, negative flux
let mut k = k.slice_mut(s![.., .., 0]);
let (v, g) = (g, v);
for j in 0..ny {
let hinv = 1.0 / (SBP::h()[0] / (nx - 1) as f32);
let g = y.slice(s![.., .., nx - 1]);
for ((((mut k, v), g), &kx), &ky) in k
.slice_mut(s![.., .., 0])
.gencolumns_mut()
.into_iter()
.zip(y.slice(s![.., .., 0]).gencolumns())
.zip(g.gencolumns())
.zip(grid.detj_dxi_dx.slice(s![.., 0]))
.zip(grid.detj_dxi_dy.slice(s![.., 0]))
{
let tau = 1.0;
let v = (v[(0, j)], v[(1, j)], v[(2, j)]);
let g = (g[(0, j)], g[(1, j)], g[(2, j)]);
let kx = grid.detj_dxi_dx[(j, 0)];
let ky = grid.detj_dxi_dy[(j, 0)];
let v = (v[0], v[1], v[2]);
let g = (g[0], g[1], g[2]);
let minus = negative_flux(kx, ky);
k[(0, j)] += tau
k[0] += tau
* hinv
* (minus[0][0] * (v.0 - g.0)
+ minus[0][1] * (v.1 - g.1)
+ minus[0][2] * (v.2 - g.2));
k[(1, j)] += tau
k[1] += tau
* hinv
* (minus[1][0] * (v.0 - g.0)
+ minus[1][1] * (v.1 - g.1)
+ minus[1][2] * (v.2 - g.2));
k[(2, j)] += tau
k[2] += tau
* hinv
* (minus[2][0] * (v.0 - g.0)
+ minus[2][1] * (v.1 - g.1)
@@ -338,60 +345,68 @@ fn SAT_characteristics<SBP: SbpOperator>(k: &mut Field, y: &Field, grid: &Grid<S
}
}
let hinv = 1.0 / (SBP::h()[0] / (ny - 1) as f32);
let g = y.slice(s![.., 0, ..]);
let v = y.slice(s![.., ny - 1, ..]);
{
let mut k = k.slice_mut(s![.., ny - 1, ..]);
for j in 0..nx {
let g = y.slice(s![.., 0, ..]);
let hinv = 1.0 / (SBP::h()[0] / (ny - 1) as f32);
for ((((mut k, v), g), &kx), &ky) in k
.slice_mut(s![.., ny - 1, ..])
.gencolumns_mut()
.into_iter()
.zip(y.slice(s![.., ny - 1, ..]).gencolumns())
.zip(g.gencolumns())
.zip(grid.detj_deta_dx.slice(s![ny - 1, ..]))
.zip(grid.detj_deta_dy.slice(s![ny - 1, ..]))
{
// North boundary, positive flux
let tau = -1.0;
let v = (v[(0, j)], v[(1, j)], v[(2, j)]);
let g = (g[(0, j)], g[(1, j)], g[(2, j)]);
let kx = grid.detj_deta_dx[(ny - 1, j)];
let ky = grid.detj_deta_dy[(ny - 1, j)];
let v = (v[0], v[1], v[2]);
let g = (g[0], g[1], g[2]);
let plus = positive_flux(kx, ky);
k[(0, j)] += tau
k[0] += tau
* hinv
* (plus[0][0] * (v.0 - g.0) + plus[0][1] * (v.1 - g.1) + plus[0][2] * (v.2 - g.2));
k[(1, j)] += tau
k[1] += tau
* hinv
* (plus[1][0] * (v.0 - g.0) + plus[1][1] * (v.1 - g.1) + plus[1][2] * (v.2 - g.2));
k[(2, j)] += tau
k[2] += tau
* hinv
* (plus[2][0] * (v.0 - g.0) + plus[2][1] * (v.1 - g.1) + plus[2][2] * (v.2 - g.2));
}
}
{
let (v, g) = (g, v);
let mut k = k.slice_mut(s![.., 0, ..]);
for j in 0..nx {
let g = y.slice(s![.., ny - 1, ..]);
let hinv = 1.0 / (SBP::h()[0] / (ny - 1) as f32);
for ((((mut k, v), g), &kx), &ky) in k
.slice_mut(s![.., 0, ..])
.gencolumns_mut()
.into_iter()
.zip(y.slice(s![.., 0, ..]).gencolumns())
.zip(g.gencolumns())
.zip(grid.detj_deta_dx.slice(s![0, ..]))
.zip(grid.detj_deta_dy.slice(s![0, ..]))
{
// South boundary, negative flux
let tau = 1.0;
let v = (v[(0, j)], v[(1, j)], v[(2, j)]);
let g = (g[(0, j)], g[(1, j)], g[(2, j)]);
let kx = grid.detj_deta_dx[(0, j)];
let ky = grid.detj_deta_dy[(0, j)];
let tau = 1.0;
let v = (v[0], v[1], v[2]);
let g = (g[0], g[1], g[2]);
let minus = negative_flux(kx, ky);
k[(0, j)] += tau
k[0] += tau
* hinv
* (minus[0][0] * (v.0 - g.0)
+ minus[0][1] * (v.1 - g.1)
+ minus[0][2] * (v.2 - g.2));
k[(1, j)] += tau
k[1] += tau
* hinv
* (minus[1][0] * (v.0 - g.0)
+ minus[1][1] * (v.1 - g.1)
+ minus[1][2] * (v.2 - g.2));
k[(2, j)] += tau
k[2] += tau
* hinv
* (minus[2][0] * (v.0 - g.0)
+ minus[2][1] * (v.1 - g.1)