[FLASH-USERS] A problem for the "Negative 3T internal energy"

[Wu, Yaoxing]

Dear FLASH users & developers,

I am simulating a laser pulse irradiated on a slab target based on the LaserSlab simulation in “cartesian 2D”. I have two questions during the simulation and attached the screenshots and .par file.


  1.  Sometimes the simulation is aborted after several nanoseconds and a message shows “Negative 3T internal energy”. This problem will occur when I adjust the “Domain size” and “Total number of blocks” in the .par file. Could you please tell me the reason and how to prevent this problem for long-time (>500 ns) simulation?


  1.  The surface of the target is filled with a high-temperature region even far from the laser interaction position. It is not reasonable because the plume of laser produced slab plasma is like an elliptic.

Thanks. I would appreciate for your any help.

Regards,
Yaoxing Wu


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