Meeting Update Jun 3

Conference Did the VISA interview in NYC last weekend. We need to order some poster tubes if we don't have some yet ($10 on Amazon).

Star Formation Jonathan did a quick fix for the patched particle refinement. It looks better now for the uniform collapse problem: only creating 12 particles and no more particles added (similar behavior to the Federrath accretion). Although one problem is that they don't seem to be symmetric, as in the case of Federrath.

​movie

Using this fix, I was able to rerun the TSF problem with Krumholz accretion. Currently at frame 54:

http://www.pas.rochester.edu/~shuleli/0603/0602new.png

One problem I found is that similar to the uniform collapse, it creates two particles both of which are off-centered (only slightly). The position of particles are (x=1.3, y=1.5, z=1.5 being the center):

http://www.pas.rochester.edu/~shuleli/0603/positions.png

I also noticed the run being much slower than the previous Federrath run with the same resolution setting.

NLUF completed the implementation of Spitzer resistivity into the explicit solver. One thing I'm worried about is the time stepping of the code will be dominated by the highest resistivity in the grid, i.e. inside the clump where temperature is 100 times colder, resulting in a resistivity that is 1000 times higher. Therefore even if the environment has a high Reynolds number, it is likely that the overall time step will be very small.

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