Length and time scale of the smallest resolved eddies in LES computation
Hi,
I am trying to simulate flows around a circular cylinder at Re=10^6 (refer to Kim and Mohan, PREDICTION OF UNSTEADY LOADING ON A CIRCULAR CYLINDER IN HIGH REYNOLDS NUMBER FLOWS USING LARGE EDDY SIMULATION, OMAE, 2005) Question is how to estimate characteristic length and time scale of the smallest resolved eddies in order to make sure that time step has turn-over time enough to resolve the smallest resolved eddies. |
Quote:
The maximum time step is then consequent to stability constraint of your scheme but you can work with smallest time step, until to the Kolmogorov time-scale |
FMDenaro
Thanks for your reply. I will try with the Kolmogorov time-scale first. |
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