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special case first vortice

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This commit is contained in:
Magnus Ulimoen
2020-04-23 00:08:28 +02:00
parent db6f7ef41f
commit 650f7f204a
1 changed files with 35 additions and 5 deletions
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32
sbp/src/euler.rs
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@@ -449,12 +449,42 @@ pub fn vortex(
y in y)
{
let mut iterator = vortex_param.vortices.iter();
match iterator.next() {
None => {
*rho = rho_inf;
*rhou = rho_inf*u_inf;
*rhou = rho_inf*v_inf;
*e = e_inf;
return;
},
Some(vortice) => {
use crate::consts::PI;
for vortice in vortex_param.vortices.iter() {
let rstar = vortice.rstar;
let eps = vortice.eps;
let dx = (x - vortice.x0) - time;
let dy = y - vortice.y0;
let f = (1.0 - (dx*dx + dy*dy))/(rstar*rstar);
*rho = Float::powf(1.0 - eps*eps*(GAMMA - 1.0)*m*m/(8.0*PI*PI*p_inf*rstar*rstar)*f.exp(), 1.0/(GAMMA - 1.0));
assert!(*rho > 0.0);
let p = Float::powf(*rho, GAMMA)*p_inf;
let u = 1.0 - eps*dy/(2.0*PI*p_inf.sqrt()*rstar*rstar)*(f/2.0).exp();
let v = eps*dx/(2.0*PI*p_inf.sqrt()*rstar*rstar)*(f/2.0).exp();
assert!(p > 0.0);
assert!(*rho > 0.0);
*rhou = *rho*u;
*rhov = *rho*v;
*e = p/(GAMMA - 1.0) + *rho*(u*u + v*v)/2.0;
}
}
for vortice in iterator {
use crate::consts::PI;
let rstar = vortice.rstar;