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Old   April 27, 2005, 07:39
Default Timestep for transient simulation
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Hi, I'm modeling a "bubble column" (by CFX5.6) and running a transient simulation (steady state didn't work) I have almost 200,000 elements and I'm using 0.05 s, timesteps, the residual curves are not smooth and after 200 time steps, the imbalace eqs. aren't converged, yet! so, I guess my timestep 0.05s is very small. (there are almost 8 loop iterations for each timestep) so, am I on the right track or shall I make some changes?!? would appreciate any comments...

regards, houman
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Old   April 27, 2005, 18:51
Default Re: Timestep for transient simulation
Glenn Horrocks
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What are you trying to do? 8 iterations per timestep for a multi-phase simulation is fairly normal.

Regards, Glenn Horrocks
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Old   April 28, 2005, 03:44
Default Re: Timestep for transient simulation
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Hi Glenn, Many thanks for your reply, you are right, I am working on a two phase simulation (gas & water). so I don't have to worry about it Regards, Houman
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