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note that it works just fine with compressible_rk using RK4 integration, so the issue seems to be the spatial reconstruction, not the temporal evolution. I suspect that the problem is that the 4th order stencils don't work because we are passing in cell-averages and then we need to do HSE integration on the cell averages, but we are treating them like cell-centers.
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zingale commentedon Nov 22, 2024
note that it works just fine with
compressible_rkusing RK4 integration, so the issue seems to be the spatial reconstruction, not the temporal evolution. I suspect that the problem is that the 4th order stencils don't work because we are passing in cell-averages and then we need to do HSE integration on the cell averages, but we are treating them like cell-centers.zingale commentedon Nov 22, 2024
it would be better to just add the one-sided stencils to do a better job with reflecting BCs with 4th order, see #244
zingale commentedon Nov 22, 2024
zingale commentedon Nov 22, 2024
that's an example ^
left is HSE BCs and right is reflect