divergence detected in Eulerian multiphase model

Feanor4ik · May 25, 2012, 10:57

Hi, everyone!
I'm modeling separation of liquid film from the surface throught the slit. Thikness of the film is very low (about 40 micrometers). Thus I have to use hight quality mapped mesh with cell size 1x1 micrometer. I use pressure inlet and pressure outlet boundary conditions, Eulerian multiphase model, laminar viscous model and define liquid film thikness by profile (principal scheme is shown on the picture).

The quality of grid is very hight, but in few iterations I got divergence detected(((
What can you advice?

Regards,
Vitaliy

papteo · May 30, 2012, 08:21

what is exactly the message given? I mean where is exactly the divergence momentum, temperature pressure?

Feanor4ik · May 31, 2012, 05:46

Quote:

Originally Posted by papteo

what is exactly the message given? I mean where is exactly the divergence momentum, temperature pressure?

temperature limited to 1.000000e+00 in 51 cells on zone 11 in domain 2
temperature limited to 5.000000e+03 in 22 cells on zone 11 in domain 2
temperature limited to 1.000000e+00 in 2 cells on zone 11 in domain 3

# Divergence detected in AMG solver: pressure coupled

May 25, 2012, 10:57	divergence detected in Eulerian multiphase model	#1
Feanor4ik New Member Vitaliy Join Date: Sep 2011 Posts: 5 Rep Power: 14	Hi, everyone! I'm modeling separation of liquid film from the surface throught the slit. Thikness of the film is very low (about 40 micrometers). Thus I have to use hight quality mapped mesh with cell size 1x1 micrometer. I use pressure inlet and pressure outlet boundary conditions, Eulerian multiphase model, laminar viscous model and define liquid film thikness by profile (principal scheme is shown on the picture). The quality of grid is very hight, but in few iterations I got divergence detected((( What can you advice? Regards, Vitaliy

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May 30, 2012, 08:21		#2
papteo Member Theodoros Papadopoulos Join Date: Mar 2011 Posts: 36 Rep Power: 15	what is exactly the message given? I mean where is exactly the divergence momentum, temperature pressure?