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time taken to update solution in unsteady flow |
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May 6, 2004, 05:50 |
time taken to update solution in unsteady flow
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#1 |
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Hi, I am running an unsteady simulation, the interations are running at a acceptable rate however it takes a very long time to update the solution. Is there anything i need to do to speed this up? is it possible i may be trying to update a solution over the network? what is the file that fluent is updating?
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May 6, 2004, 13:03 |
Re: time taken to update solution in unsteady flow
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#2 |
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Dear phil:
are you writing a lot of .out files ? monitors ? if so, if you are doing it per iteration, that might be the culprit -- just a wild guess. |
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May 6, 2004, 13:05 |
Re: time taken to update solution in unsteady flow
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#3 |
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thanks for the reply but unfortunately its definately not that, i have no monitors of any time and the iterations are progressing well it just takes a lot of time to update the solution at the end of every timestep
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May 7, 2004, 09:22 |
Re: time taken to update solution in unsteady flow
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#4 |
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are you writing to network drive or local drive? try local - that may give you better results.
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May 17, 2004, 08:33 |
Re: time taken to update solution in unsteady flow
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#5 |
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Hi best thing to improve the convergence rat is just increase underrelaxation factors(ideally to 1) .. kethireddy... rwth-aachen.. Germany
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May 17, 2004, 11:08 |
Re: time taken to update solution in unsteady flow
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#6 |
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Are you using VOF model? If so, that should be the reason of long updating time because of the VOF sub-time steps.
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May 17, 2004, 11:12 |
Re: time taken to update solution in unsteady flow
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#7 |
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yes it is VOF
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