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Opened 4 months ago

#2189 assigned enhancement

Carpet/CarpetLib: Add Lagrange_third_order_prolong prolongation option.

Reported by: zachetie@… Owned by: rhaas@…
Priority: unset Milestone:
Component: Other Version: development version
Keywords: Cc:

Description

When the default prolongation type is chosen in a dynamical spacetime evolution, hydrodynamic and GRMHD fields can suffer from spurious oscillations generated at AMR refinement boundaries due to the high-order Lagrange polynomial prolongation.

As there is no way to directly specify the prolongation order in the interface.ccl, I have created a Carpet pull request that adds the desired order (3rd) Lagrange polynomial prolongation:

https://bitbucket.org/eschnett/carpet/pull-requests/21/

I would like this to be the default prolongation option for IllinoisGRMHD and GiRaFFE, so it would be immediately useful.

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