energy problem

dldl · February 5, 2011, 19:22

Hi,
I modeled a Finned Tube. For Meshing I had a problem that it solved here in this website. In Fluent, unexpectedly, the residual for the energy is beginning to Increase after 50 iterations. The other Residuals-Parameters reduce against it. The report shows that the temperature is not in the allowed limit, it is very high. What can be the problem?

see:
http://www.cfd-online.com/Forums/ans...wavy-fins.html

byronsmith · February 6, 2011, 02:54

try changing the under relaxation factors

dldl · February 6, 2011, 08:02

Thank you. The situation seems to be OK. Residuals-parameter reduced continuously.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Convergence problem of the energy equation	Woo Meng Wai	FLUENT	2	May 13, 2008 04:06
Rought estimation of dissipation energy	MC	Main CFD Forum	0	December 10, 2006 21:57
Energy dissipation and Drag coefficient	Freeman	Main CFD Forum	10	January 27, 2006 08:42
extremely simple problem... can you solve it properly?	Mikhail	Main CFD Forum	40	September 9, 1999 10:11
Why FVM for high-Re flows?	Zhong Lei	Main CFD Forum	23	May 14, 1999 14:22

February 6, 2011, 02:54		#2
byronsmith Member Byron Smith R J Join Date: Mar 2009 Location: India Posts: 46 Rep Power: 17	try changing the under relaxation factors

February 6, 2011, 08:02		#3
dldl New Member Diala Join Date: Dec 2010 Posts: 8 Rep Power: 15	Thank you. The situation seems to be OK. Residuals-parameter reduced continuously.