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[WIP] implement one-sided stencils for 4th order #303

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@zingale zingale commented Nov 22, 2024

these are for symmetry boundaries.

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zingale commented Nov 22, 2024

this addresses #244

@zingale zingale changed the title implement one-sided stencils for 4th order [WIP] implement one-sided stencils for 4th order Nov 22, 2024
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zingale commented Mar 24, 2025

Here's the rt_multimode problem without the initial perturbation + reflecting BCs run with the 4th order solver, showing Mach number in a vertical slice:

rt_bcs

blue is the current main and orange is this PR.

We see that this PR reduces the velocity noise near the boundary.

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