New ls-dyna version yields failed ICFD simulation, should I use the older version?

Hi everyone,

These days I am running ls-dyna for an ICFD simulation, which I successfully ran about 4 years ago with mpp d R9 ALPHA, and all the setting are the same. However, now the simulation always has the problem of segfaults (the time step size (dt) is becoming smaller and smaller). I tried mmp d R10.1, and mpp d R9.2.0, but the same problem. Attached are the message files for the previous simulation and current one. Could you please explain why this happens? And what should I do to get the successful simulation as before?


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