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February 24, 2009, 21:12 |
what is the Typical cell size?
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#1 |
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am trying to run unsteady case, and in order to do that I need to estimate (delta t)
delta t= Typical cell size/characteristic flow velocity (this eqution from fluent.com) can any body help in this thanks |
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February 25, 2009, 14:05 |
Re: what is the Typical cell size?
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#2 |
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In 3d you could use cube root of volume/#_of_cells. Just an estimate.
HTH |
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February 25, 2009, 15:14 |
Re: what is the Typical cell size?
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#3 |
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Hi!
i would use the finest grid cell for calculation. So you can be sure that flow is resolved everywhere Best whises Ralf |
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December 7, 2016, 08:31 |
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#4 |
Senior Member
Onur Özcan
Join Date: Feb 2016
Location: Istanbul/Turkey
Posts: 461
Rep Power: 12 |
which one is preferred to be used? both approximations are applicable.
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December 7, 2016, 10:05 |
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#5 | |
Senior Member
Join Date: Feb 2011
Posts: 496
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Quote:
If your mesh is relatively uniform, then you may estimate cell size as cubic root of Domain Volume / Number of Cells. Anyway it is safe to use minimum cell size. |
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