AMReX-Astro / AMReX-Astro/Castro

HLLC solver has incomplete godunov interface state

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hydro
Dominant language
C++
Stars
340
Forks
105
Avg merge
3d 8h
Merged PRs (30d)
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Description

We only fill the normal velocity and pressure of the Godunov state when doing HLLC, and even this is in an approximate way that is inconsistent with HLLC. We should have a different code path when using HLLC that avoids the need for the interface states.

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Research direction

No files, tests, or entry points are named. Start by tracing the HLLC implementation and its Godunov interface-state handling, then compare that path with the solver's other interface-state paths. Done means HLLC no longer depends on incomplete approximate interface states and its behavior is covered by relevant validation.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
hpc
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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