[FLASH-USERS] running laser log simulation

[George Herrera]

Hi all,

I hope to get some suggestions on running a custom geometry using a custom
laserslab module. I created a 3D data array that is read into FLASH that
constructs a custom geometry for the target. It's a random "log" geometry
simulating a foam-like structure and it keeps stalling when the laser
starts to ramp up.

My guess it has something to do with either the hydro settings, the dt
factors and/or the diffusion BCs. I am less familiar with the sensitivity
of these parameters.

I was hoping for some suggestions on how to have this run efficiently. What
parameters should I increase or decrease or make true/false, to help this
move forward. I am looking for penetration depth of the laser and electron
density expansion in the vacuum side, so sub micron features aren't
important but the logs are sub micron. Below is an stl image of the foam
structure, where the long axis is the laser propagation direction.

Any help is appreciated. Thank you.

[image: image.png]
--
George Herrera, PE
PhD Student | MAE-Engineering Physics
University of California, San Diego
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