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July 2, 2010, 02:17 |
Mean calculation in LES
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#1 |
Member
Join Date: Mar 2009
Posts: 46
Rep Power: 17 |
Hi,
I am using LES to calculate a completely unsteady flow (not periodic or something predictable in mean). It is of need to calculate the turbulence quantities like kinetic energy and dissipation. The problem is that I don't know how to calculate the means and fluctuations in the unsteady flow? I read somewhere about averaging on a time window about every point in time. Is this possible? If yes, how much should be the window size? I'd appreciate it, if you could mention any other method you might know. Sincerely, Maani |
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