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remove bounds checks

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Magnus Ulimoen
2020-01-27 20:17:52 +01:00
parent 7fd69d0619
commit 9092ab4a32
1 changed files with 40 additions and 27 deletions
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67
src/euler.rs
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@@ -313,41 +313,54 @@ fn upwind_dissipation<UO: UpwindOperator>(
grid: &Grid<UO>,
tmp: (&mut Field, &mut Field),
) {
for j in 0..y.ny() {
for i in 0..y.nx() {
let rho = y[(0, j, i)];
assert!(rho > 0.0);
let rhou = y[(1, j, i)];
let rhov = y[(2, j, i)];
let e = y[(3, j, i)];
let n = y.nx() * y.ny();
let yview = y.view().into_shape((4, n)).unwrap();
let mut tmp0 = tmp.0.view_mut().into_shape((4, n)).unwrap();
let mut tmp1 = tmp.1.view_mut().into_shape((4, n)).unwrap();
let u = rhou / rho;
let v = rhov / rho;
for (
((((((y, mut tmp0), mut tmp1), detj), detj_dxi_dx), detj_dxi_dy), detj_deta_dx),
detj_deta_dy,
) in yview
.axis_iter(ndarray::Axis(1))
.zip(tmp0.axis_iter_mut(ndarray::Axis(1)))
.zip(tmp1.axis_iter_mut(ndarray::Axis(1)))
.zip(grid.detj.iter())
.zip(grid.detj_dxi_dx.iter())
.zip(grid.detj_dxi_dy.iter())
.zip(grid.detj_deta_dx.iter())
.zip(grid.detj_deta_dy.iter())
{
let rho = y[0];
assert!(rho > 0.0);
let rhou = y[1];
let rhov = y[2];
let e = y[3];
let uhat = grid.detj_dxi_dx[(j, i)] / grid.detj[(j, i)] * u
+ grid.detj_dxi_dy[(j, i)] / grid.detj[(j, i)] * v;
let vhat = grid.detj_deta_dx[(j, i)] / grid.detj[(j, i)] * u
+ grid.detj_deta_dy[(j, i)] / grid.detj[(j, i)] * v;
let u = rhou / rho;
let v = rhov / rho;
let p = pressure(GAMMA, rho, rhou, rhov, e);
assert!(p > 0.0);
let c = (GAMMA * p / rho).sqrt();
let uhat = detj_dxi_dx / detj * u + detj_dxi_dy / detj * v;
let vhat = detj_deta_dx / detj * u + detj_deta_dy / detj * v;
let alpha_u = uhat.abs() + c;
let alpha_v = vhat.abs() + c;
let p = pressure(GAMMA, rho, rhou, rhov, e);
assert!(p > 0.0);
let c = (GAMMA * p / rho).sqrt();
tmp.0[(0, j, i)] = alpha_u * rho * grid.detj[(j, i)];
tmp.1[(0, j, i)] = alpha_v * rho * grid.detj[(j, i)];
let alpha_u = uhat.abs() + c;
let alpha_v = vhat.abs() + c;
tmp.0[(1, j, i)] = alpha_u * rhou * grid.detj[(j, i)];
tmp.1[(1, j, i)] = alpha_v * rhou * grid.detj[(j, i)];
tmp0[0] = alpha_u * rho * detj;
tmp1[0] = alpha_v * rho * detj;
tmp.0[(2, j, i)] = alpha_u * rhov * grid.detj[(j, i)];
tmp.1[(2, j, i)] = alpha_v * rhov * grid.detj[(j, i)];
tmp0[1] = alpha_u * rhou * detj;
tmp1[1] = alpha_v * rhou * detj;
tmp.0[(3, j, i)] = alpha_u * e * grid.detj[(j, i)];
tmp.1[(3, j, i)] = alpha_v * e * grid.detj[(j, i)];
}
tmp0[2] = alpha_u * rhov * detj;
tmp1[2] = alpha_v * rhov * detj;
tmp0[3] = alpha_u * e * detj;
tmp1[3] = alpha_v * e * detj;
}
UO::dissxi(tmp.0.rho(), k.0.rho_mut());