Convergence issues with Mixture model, when gas treatment changed to ideal gas

DVS · September 22, 2013, 16:20

Hello,

I have been trying to simulate gas induction in a nozzle-ejector geometry. Where gas is en trained because of the flowing water jet. I set up a simpler run where gas density was taken constant and the run converged. However, when I changed the gas behavior to ideal gas it is showing ÄMG Divergence error in all equations. I have been tried first and second order discretization schemes but still nothing. Please help. Thank you.

mhdmk · September 23, 2013, 12:59

try small mesh size and under relax all variables specially density and volume fraction

September 22, 2013, 16:20	Convergence issues with Mixture model, when gas treatment changed to ideal gas	#1
DVS New Member Deepankar V Sharma Join Date: Sep 2013 Posts: 1 Rep Power: 0	Hello, I have been trying to simulate gas induction in a nozzle-ejector geometry. Where gas is en trained because of the flowing water jet. I set up a simpler run where gas density was taken constant and the run converged. However, when I changed the gas behavior to ideal gas it is showing ÄMG Divergence error in all equations. I have been tried first and second order discretization schemes but still nothing. Please help. Thank you.

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September 23, 2013, 12:59		#2
mhdmk New Member mehrdad Join Date: Feb 2011 Posts: 20 Rep Power: 15	try small mesh size and under relax all variables specially density and volume fraction