How to fix this error on MFIX-19.1 (DT < DT_MIN. Recovery not possible!)

MFiX
#1

hi dear
how can i fix this error
ERROR C:\tools\miniconda3\conda-bld\mfix-solver_1555350421062\work\model
\time_step.f:195

#2

DT < DT_MIN. Recovery not possible!

#3

DT < DT_MIN means that the simulation is not converging. There could be a number of items to check including poor model options, poor initial conditions, bad mesh, …

#6

I am seeing this error and I am using a uniform mesh with cell aspect ratio essentially at 1.0. Could someone take a look and help me see what I can improve.tfm_isotherm.mfx (39.8 KB) geometry.stl (114.4 KB) geometry.stl (114.4 KB)