Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

update the shock detection algorithm for r-theta #2959

Merged
merged 3 commits into from
Sep 19, 2024
Merged

update the shock detection algorithm for r-theta #2959

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
5e8bd5d
update the shock detection algorithm for r-theta
zingale Sep 16, 2024
45cc18f
fix comment
zingale Sep 18, 2024
d6a1b4b
make the comment clearer
zingale Sep 19, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
27 changes: 24 additions & 3 deletions Source/hydro/advection_util.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -113,7 +113,6 @@ Castro::shock(const Box& bx,
#endif
#endif

#if AMREX_SPACEDIM == 1
} else if (coord_type == 2) {

// 1-d spherical
Expand All @@ -122,6 +121,15 @@ Castro::shock(const Box& bx,
Real rp = (i + 1 + 0.5_rt) * dx[0];

div_u += 0.5_rt * (rp * rp * q_arr(i+1,j,k,QU) - rm * rm * q_arr(i-1,j,k,QU)) / (rc * rc * dx[0]);
#if AMREX_SPACEDIM == 2

Real thetac = (j + 0.5_rt) * dx[1];
Real thetam = (j - 1 + 0.5_rt) * dx[1];
Real thetap = (j + 1 + 0.5_rt) * dx[1];

div_u += 0.5_rt * (std::sin(thetap) * q_arr(i,j+1,k,QV) -
std::sin(thetam) * q_arr(i,j-1,k,QV)) /
(rc * sin(thetac) * dx[1]);
#endif

#ifndef AMREX_USE_GPU
Expand All @@ -134,7 +142,14 @@ Castro::shock(const Box& bx,

// now compute (grad P - rho g) . dx
// We subtract off the hydrostatic force, since the pressure that
// balances that is not available to make a shock.
// balances that is not available to make a shock. We compute this
// as:
//
// P'_{i+1} = P_{i+1} - [ P_i + \int_{x_i}^{x_{i+1}} rho g dx ]
//
// where the term in the [ ] is the hydrostatic pressure in i+1
// computed by integrating from x_i to x_{i+1}
//
// We'll use a centered diff for the pressure gradient.
Real dP_x = 0.5_rt * (q_arr(i+1,j,k,QPRES) - q_arr(i-1,j,k,QPRES));
if (shock_detection_include_sources == 1) {
Expand All @@ -145,7 +160,13 @@ Castro::shock(const Box& bx,
#if AMREX_SPACEDIM >= 2
dP_y = 0.5_rt * (q_arr(i,j+1,k,QPRES) - q_arr(i,j-1,k,QPRES));
if (shock_detection_include_sources == 1) {
dP_y += -0.25_rt * dx[1] * (U_src_arr(i,j+1,k,UMY) + 2.0_rt * U_src_arr(i,j,k,UMY) + U_src_arr(i,j-1,k,UMY));
Real dy{dx[1]};
if (coord_type == 2) {
// dx[1] is just dtheta
Real rc = (i + 0.5_rt) * dx[0];
dy *= rc;
}
dP_y += -0.25_rt * dy * (U_src_arr(i,j+1,k,UMY) + 2.0_rt * U_src_arr(i,j,k,UMY) + U_src_arr(i,j-1,k,UMY));
}
#endif
#if AMREX_SPACEDIM == 3
Expand Down