AMReX-Astro / AMReX-Astro/Castro

reimplement stellar boundary conditions

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

Description

Sometimes we only model a portion of a star, with the surface outside of the computational domain. We used to have the ability to spherically average the star on the grid and use this profile to initialize the ghost cells. This was removed in 5e8a228fc4e3b05fec53acca2d2a7dd2de0ab290

We should add this back in. Perhaps extending the model via HSE to get the corners of the domain correct too.

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Research direction

Start by reviewing commit 5e8a228fc4e3b05fec53acca2d2a7dd2de0ab290, which removed the prior spherical-averaging behavior. Restore the ability to use a spherically averaged stellar profile to initialize ghost cells when the surface lies outside the computational domain; the optional HSE extension for domain corners needs its expected behavior defined.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
backend
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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