Particles Blowing Up

Submitted by NSalloum on Mon, 09/09/2019 - 09:55


I performed two simulations of a mixing process using two stirrers of different geometries. Although the same material properties and time step are used in both simulations, the system is "blowing up" when using one of the stirrers. The time step is then representing more than 10% of hertz time (even reaching 18% sometimes), unlike using the other stirrer where the time step doesn't exceed 7% of hertz time.

So do you have any suggestions of what is causing this problem and in what way should I think to solve this problem ?

best wishes,