Non-negative cell detected by fluent after restarting an FSI problem
I tried to simulate a discharging pipe in a tank with a velocity higher than flutter speed, which causes the pipe to oscillate in the tank. I ran this problem for 2s without problem but when I tried to restart the case at for example 1.9 s with the same time-step (I set the restarting point for fluent and Ansys mechanical exactly at 1.9 s), I got a "(DP 0) Update-Dynamic-Mesh failed. Negative cell volume detected." error.
I appreciate it if someone can help me