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FaceDivFree 4x#5226

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BenWibking wants to merge 2 commits intoAMReX-Codes:developmentfrom
BenWibking:facedivfree-4x
Closed

FaceDivFree 4x#5226
BenWibking wants to merge 2 commits intoAMReX-Codes:developmentfrom
BenWibking:facedivfree-4x

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@BenWibking
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@BenWibking BenWibking commented Mar 25, 2026

Summary

This supports isotropic level jumps of 4x by applying the 2x interpolator recursively.

Vibe coded. It passes the included DivFreePatch test, but needs more testing.

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Checklist

The proposed changes:

  • fix a bug or incorrect behavior in AMReX
  • add new capabilities to AMReX
  • changes answers in the test suite to more than roundoff level
  • are likely to significantly affect the results of downstream AMReX users
  • include documentation in the code and/or rst files, if appropriate

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