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Castro (Compressible Astrophysics): An adaptive mesh, astrophysical compressible (radiation-, magneto-) hydrodynamics simulation code for massively parallel CPU and GPU architectures.

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e.g., we should do normalize species fluxes on the MHD fluxes

mhd

Running `reacting_bubble` using `inputs_2d`, after 300 steps there is a clear temperature feature at the refinement boundaries: ![Screenshot from 2020-04-14 11-44-10](https://user-images.githubusercontent.com/7817509/79244854-5c9f2c00-7e45-11ea-97a8-bd6c2cc0da86.png)

It would be great to have the ability to take a 2d axisymmetric simulation and use it to initialize a 3d calculation by rotating it about the vertical axis. This...

enhancement

For inflow BCs, we should adopt the strategy from Maestro and others where the ghost cell value represents the interface value, and not the cell-center. And then we should use...

At it's peak, we had 3 options for including temperature in the reconstruction of interface states: * `ppm_temp_fix = 1` would reconstuct T and then use the EOS to get...

hydro

After #760 and #762, we now have Microphysics and AMReX as submodules. We have chosen to commit them as static commits, so we pick a specific commit/tag and they are...

We should be able to merge the hydro source constructor for both MOL and CTU. If we pass dt = 0 to the CTU hydro source constructor, the code should...

hydro
clean-up

The hyperbolic system does not need the ghost cell in the State_Type data, even with radiation. The only reason it seems to be there is for constructs like this in...

radiation
clean-up

Consider the algorithm for allow_small_energy == 0, which is the stricter version we should ideally enforce. First, it computes small_e = EOS(rho, small_temp). Then it checks if eint < small_e....

One of the main difficulties in writing unit tests (e.g. issue #404) is that we have one monolithic build target in Make.Castro. If we modularized this so that individual components...