AMReX-Astro / AMReX-Astro/Microphysics
add the explicit Patankar-Euler-Deflhard integrator
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- Dominant language
- C++
- Stars
- 43
- Forks
- 46
- Avg merge
- 2d 18h
- Merged PRs (30d)
- 15
Description
This paper: https://arxiv.org/abs/2110.08035 descirbes a stable explicit integrator, Patankar-Euler-Deflhard. It appears first order, but they show how to use Richardson extrapolation with it. This may be an alternative to RKC, or at least it would be good to see how they compare.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reading the linked Patankar-Euler-Deflhard paper and reviewing the existing RKC integrator. Determine where integrators are implemented and how their behavior is evaluated. Done means the explicit integrator is available and its performance or stability is compared with RKC.
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
- Needs clarification
- Newbie friendliness
- 20/100