Mpi_comm_f2c() function was called after mpi-finalize was invoked

MFiX
#1

Hello, what is the reason for the error in the following picture? Thank you

2022-11-02 22-33-05屏幕截图
2022-11-02 22-33-05屏幕截图1048×746 28 KB

2022-11-02 22-32-43屏幕截图
2022-11-02 22-32-43屏幕截图1051×755 114 KB

tansuanhua_xiao_2022-11-02T223311.620108.zip (156.4 KB)

#2

Looking at the LOG file:


>>>>>=================================================================
WARNING from utilities_mod.f:169
Velocity exceeds limit:   26.209
in cell: I =    7   J =    6   K =    2
 Epg =  0.86554     Ug =  -8.1864     Vg =  -26.209     Wg =   0.0000
To change the limit, adjust the scale factor MAX_INLET_VEL_FAC.
 <<<<<=================================================================
 t=     0.1000 Dt= 0.1075E-09 NIT=  2MbErr%= 0.3754E-13: Run diverged/stalled :-(


 >>>>>#################################################################
ERROR from time_step.f:193
DT < DT_MIN.  Recovery not possible!
 <<<<<#################################################################

The MPI_FINALIZE warnings are somehow causing this message to not be displayed. I’ll fix that. But this looks like a familiar type of convergence failure.

#3

Thank you for your reply. I adjusted the intake speed and the problem was solved.
What is the relationship between dt and dt_min and the intake velocity in BC? Do you have a specific formula? thank you