Meeting Update Feb 10 2014

  • Laser stuff: The rad transfer seems to be working fine. Here's what I got after applying 1e14 W/cm2 rad flux at the left surface of the simulation box for 1 ns:



At 2 ns, It becomes:



Note that the heat up is lower than that in Peter's simulations, where the region just in front of the target is at about 0.03 KeV. To achieve the same temperature, we need to apply the flux for more than 50 ns, in which the temperature of the target gets heated up way more than that in Peter's simulation.

We will apply shocks to this initial set up (the 2D runs are several hours worth on 8 cores so we should be able to get the results we want in 1 day or 2). The current shock speed I got from the set up is about 100 um/ns when it reaches the target. It'd be nice if we can know the pressure that drives the shock so we can simulate the driving directly.

Also, I have started revising the resistive shock clump paper. My goal is to get it submitted by the end of April.

  • TSF: finished revising the paper. There's some minor tweaks needed, but we are nearly done with this one. I have been reviewing some of the simulation papers by Boss and Vanhala last week, I think the next paper should be investigating the parameters space for the disk formation: two sets of runs:

Mach ranging from 5 to 40 with K = 0.1 to study the impact of M on disk formation;
Mach 10 or 20 shock (this is what they proposed to be able to achieve injection) with K ranging from 0 to 1.
We should bring mixing into the focus as it is one of the key reason why people are interested in this problem.
From my previous paper, these two sets should total about 1 mln hours of cpu time on kraken.

The other two ideas are (1) magnetized TSF, as we've seen interesting results from the prototype runs. (2) to study different sink particle algos in the context of TSF.

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