[FLASH-USERS] huge jump of hydrodynamic properties

Maksim Kozlov maksim.kozlov at nu.edu.kz
Thu Feb 11 23:55:52 EST 2021


Dear Friends,
I would really appreciate your help with the following issue:
I am running a SBlast simulation in 3D - hydrodynamic expansion of initial
perturbation with two fluids (3D graph of initial perturbation of internal
energy is attached - energyZ). Simulation starts to execute perfectly -
initial ball-shaped perturbation starts to expand but between 16th and 17th
time step (please see attached slices of distributions of density, pressure
and internal energy) something happens - in a few cells values of density,
pressure and internal energy  become crazy ~10^38 and code crashes after
that with Floating point exception - erroneous arithmetic operation. Any
ideas on what can cause this problem or how can I track it down would be
greatly appreciated!
Thank you very much!
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