Non-convergnece error message

Iltesham · October 6, 2011, 16:58

Hi,
I did not find any thread which talks about this, so i am putting it down here.
I am doing some unsteady simulations involving combustion with K-e model.
The problem i am facing is that before every time step there is a series of messages like " Cell with id =xxx and centroid at (x,y) did not converge" and then i get this message " total number of cells did not converge in this time step = 100".
And after this the actual iteration starts.
I dont know what is causing this problem, can any body help please?
I will really appreciate it.
I am using multi-species kinetic mechanism and "KINetics from reaction design" module.
The Mesh seems ok
Can some body please help.
thanks,
Iltesham

Iltesham · October 6, 2011, 17:00

I have tried changing URFs and Courant Number but not working.

malay · November 4, 2015, 15:08

I faced same problem ?
do u solve it please ?

October 6, 2011, 16:58	Non-convergnece error message	#1
Iltesham New Member Iltesham Join Date: Nov 2010 Posts: 9 Rep Power: 16	Hi, I did not find any thread which talks about this, so i am putting it down here. I am doing some unsteady simulations involving combustion with K-e model. The problem i am facing is that before every time step there is a series of messages like " Cell with id =xxx and centroid at (x,y) did not converge" and then i get this message " total number of cells did not converge in this time step = 100". And after this the actual iteration starts. I dont know what is causing this problem, can any body help please? I will really appreciate it. I am using multi-species kinetic mechanism and "KINetics from reaction design" module. The Mesh seems ok Can some body please help. thanks, Iltesham

October 6, 2011, 17:00	cells do not converge	#2
Iltesham New Member Iltesham Join Date: Nov 2010 Posts: 9 Rep Power: 16	I have tried changing URFs and Courant Number but not working.

November 4, 2015, 15:08		#3
malay Senior Member ahmad Join Date: Feb 2012 Posts: 101 Rep Power: 14	I faced same problem ? do u solve it please ?