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December 12, 2012, 06:49 |
Residual and Imbalance oscillating
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#1 |
New Member
Felix
Join Date: Nov 2012
Posts: 15
Rep Power: 14 |
Hello,
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. BCs are: 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 |
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December 12, 2012, 17:19 |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,871
Rep Power: 144 |
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Tags |
imbalance, oscillating, residual |
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