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Old   March 15, 2013, 06:45
Default Time step
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Hi
I do simulation for flow around building and it includes unsteady conditions that I use implicit unsteady . My question is what the limit for the time step, and can we take it as big as 1 hour ?
Thanks in advance
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Old   March 21, 2013, 18:09
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Short answer: No, you can't make it as big as 1 hour when you want go get a reasonable result.
I can't tell you about the limit since it depends of the mesh and the physics. Try to keep the CFL number below 1 for physical results.
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