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Add Metrics iterator

This commit is contained in:
Magnus Ulimoen 2021-03-26 16:27:45 +01:00
parent 75338698a4
commit 9e2ce3ae24
2 changed files with 42 additions and 13 deletions
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22
euler/src/lib.rs
View File

@ -618,15 +618,11 @@ fn upwind_dissipation(
let mut tmp0 = tmp.0 .0.view_mut().into_shape((4, n)).unwrap();
let mut tmp1 = tmp.1 .0.view_mut().into_shape((4, n)).unwrap();
for ((((((y, mut tmp0), mut tmp1), 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(metrics.detj_dxi_dx().iter())
.zip(metrics.detj_dxi_dy().iter())
.zip(metrics.detj_deta_dx().iter())
.zip(metrics.detj_deta_dy().iter())
for (((y, mut tmp0), mut tmp1), metric) in yview
.axis_iter(ndarray::Axis(1))
.zip(tmp0.axis_iter_mut(ndarray::Axis(1)))
.zip(tmp1.axis_iter_mut(ndarray::Axis(1)))
.zip(metrics.iter())
{
let rho = y[0];
assert!(rho > 0.0);
@ -637,8 +633,8 @@ fn upwind_dissipation(
let u = rhou / rho;
let v = rhov / rho;
let uhat = detj_dxi_dx * u + detj_dxi_dy * v;
let vhat = detj_deta_dx * u + detj_deta_dy * v;
let uhat = metric.detj_dxi_dx * u + metric.detj_dxi_dy * v;
let vhat = metric.detj_deta_dx * u + metric.detj_deta_dy * v;
let p = pressure(GAMMA, rho, rhou, rhov, e);
assert!(p > 0.0);
@ -648,8 +644,8 @@ fn upwind_dissipation(
// not that important in this case
let hypot = |x: Float, y: Float| Float::sqrt(x * x + y * y);
let alpha_u = uhat.abs() + c * hypot(*detj_dxi_dx, *detj_dxi_dy);
let alpha_v = vhat.abs() + c * hypot(*detj_deta_dx, *detj_deta_dy);
let alpha_u = uhat.abs() + c * hypot(metric.detj_dxi_dx, metric.detj_dxi_dy);
let alpha_v = vhat.abs() + c * hypot(metric.detj_deta_dx, metric.detj_deta_dy);
tmp0[0] = alpha_u * rho;
tmp1[0] = alpha_v * rho;

33
sbp/src/grid.rs
View File

@ -162,4 +162,37 @@ impl Metrics {
pub fn detj_deta_dy(&self) -> ArrayView2<Float> {
self.detj_deta_dy.view()
}
pub fn iter(
&self,
) -> impl DoubleEndedIterator<Item = Metric> + ExactSizeIterator<Item = Metric> + '_ {
let n = self.nx() * self.ny();
let detj = &self.detj.as_slice().unwrap()[..n];
let detj_dxi_dx = &self.detj_dxi_dx.as_slice().unwrap()[..n];
let detj_dxi_dy = &self.detj_dxi_dy.as_slice().unwrap()[..n];
let detj_deta_dx = &self.detj_deta_dx.as_slice().unwrap()[..n];
let detj_deta_dy = &self.detj_deta_dy.as_slice().unwrap()[..n];
detj.iter()
.zip(detj_dxi_dx)
.zip(detj_dxi_dy)
.zip(detj_deta_dx)
.zip(detj_deta_dy)
.map(
|((((&detj, &detj_dxi_dx), &detj_dxi_dy), &detj_deta_dx), &detj_deta_dy)| Metric {
detj,
detj_dxi_dx,
detj_dxi_dy,
detj_deta_dx,
detj_deta_dy,
},
)
}
}
pub struct Metric {
pub detj: Float,
pub detj_dxi_dx: Float,
pub detj_dxi_dy: Float,
pub detj_deta_dx: Float,
pub detj_deta_dy: Float,
}