How to resolve the issue of slow runtime？

MFiX How to
#1

Hello, technical developer! I am currently running this case, but the runtime is about 0.01 seconds per one and a half hours.Is this speed normal?And after running for a while, it shows “DT < DTmin.”I have reviewed other case scenarios, but I still cannot resolve the issue.
fl.zip (35.2 KB)

Please see the attachment below.

#2

SQP simulations are much slower than DEM. Maybe you can try to switch to ideal gas law to see if this helps with the convergence issue.