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Fci: Neutral model for curvilinear coorinates#560

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totork wants to merge 61 commits into
boutproject:fcifrom
totork:fci-metric-fullvneutrals
Draft

Fci: Neutral model for curvilinear coorinates#560
totork wants to merge 61 commits into
boutproject:fcifrom
totork:fci-metric-fullvneutrals

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@totork totork commented May 11, 2026

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This PR introduces a neutral model that evolves the momentum in all 3 directions. It also introduces the Div_perp operator for the perpendicular convection. It is inspired by

https://iopscience.iop.org/article/10.1088/1741-4326/aa8009/pdf

I tried to work a lot with slope limiters + Lax flux, nonetheless I am not that sure if the simulations are universally stable or how the solver has to be adjusted to handle low density - high velocity regions. It comes with 2 MMS tests already.

  • [ x] Check implementation of flux limiters

@totork totork marked this pull request as draft May 11, 2026 15:38
@totork totork marked this pull request as ready for review May 22, 2026 21:32
@totork totork marked this pull request as draft May 31, 2026 06:32
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