|December 12, 2012, 06:49||
Residual and Imbalance oscillating
Join Date: Nov 2012
Posts: 15Rep Power: 4
i hope you can help me.
I am currently simulating an autoclave, doing sensitivity analysis on mesh.
Its a simple transient flow simulation without heat transfer.
Reference Pressure: 5 bar
Air at 25°C
Inlet: Mass flow
Outlet: Opening (0Pa Opening Pressure)
Initial condition for Fluid: velocity 0 m/s, p=0 bar
I am simulating the first 3 secs of air flow into the autoclave.
1) I have set the residual to 10^-5 and the monitor show, that all equations converge. Anyway residual is still oscillating between 10^-5 and 10^-6.
What does that mean? Has convergence been reached?
2) The imbalance plot does also show oscillation between 10^-2 and 10^-4.
As this is a percentage value, is a value of 10^-2 sufficient for convergence?
3) Do the oscillations have influence on convergence?
Thanks in advance
|December 12, 2012, 17:19||
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 11,063Rep Power: 86
|imbalance, oscillating, residual|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Continuity convergence issue on a 3d wing||Nick R||FLUENT||18||February 4, 2015 12:21|
|Comparing Unscaled Continuity Residual with an appropriate scale||sagila||FLUENT||0||May 31, 2012 08:01|
|Domain Imbalance||HMR||CFX||3||March 6, 2011 21:10|
|About Residual Convergence||Alina||FLUENT||0||September 3, 2007 08:36|
|Residual Problem -Mass Imbalance||Jie||FLUENT||0||February 19, 2002 11:49|