Some results from outflow testing.

The following are plots of the outflow kernel, that is, the profiles of injected density and velocity of the two-component sub-grid model:

In fixed grid we see a very nice outflow. Here is the density (rho_outflow=rho-rho_amb):

But in AMR, the outflow looks like:

This particle has a buffer around it of finest cells that is r=16 zones=kernel of outflow. We still see edge effects however. I tried making the buffer larger, to r=32 zones, but this doesn't impact the mesh strangely:

Looking at the outflow velocity (which is along z, the particle's spin axis), we have in fixed grid:

And in AMR with 'r_sink=32',

I also played with a collapsing BE sphere. Here is a movie​ of a marginally stable BE sphere that is perturbed to collapse by a density enhancement. The outflow of the particle is not fixed, and so I think it is aligning to random noise in the accreted spin ,which is why it looks off-center by the end of the movie. We should probably initialized the BE sphere with some rotation.

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