CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   Fluent Multiphase (http://www.cfd-online.com/Forums/fluent-multiphase/)
-   -   Continuity convergence issue for a multiphase flow in a counterflow heat exchanger (http://www.cfd-online.com/Forums/fluent-multiphase/99919-continuity-convergence-issue-multiphase-flow-counterflow-heat-exchanger.html)

Andrea1984 April 16, 2012 05:02

Continuity convergence issue for a multiphase flow in a counterflow heat exchanger
 
Hello,

I'm performing a transient simulation of a particular kind of counterflow heat exchanger using VOF model; as I'm new to multiphase flow simulation I'm having some convergence troubles.
In particular all the scaled residuals are below the standard criteria of Fluent, except continuity, which remains pratically constant (at about 1e03) and doesn't even show the typical spike at the beginning of a new time step.
Anyone can help me or has experienced the same problem?

Thanks in advance,

Andrea

flow_CH July 1, 2013 10:29

i have exactly this problem. please help

oj.bulmer July 24, 2013 04:55

How are you sure you have used adequate timestep/inner loops? Have you tried decreasing the timestep?

OJ


All times are GMT -4. The time now is 13:52.