how can I determine the vortex shedding time step -- CFD Online Discussion Forums

July 28, 2008, 17:06	how can I determine the vortex shedding time step	#1
Zhe Liu Guest Posts: n/a	hi I am using the CFX to simulate the vortex shedding based on the unsteady solver, but I meet some problems, 1 you know St=fB/U, f is the vortex shedding frequency, but in unsteady simulation, we should know the time step, how can I determine it, I make sure it based on the min grid, for example, if the min grid is known, the time step= min grid/velocity, is that correct, but I read some document they did not consider that, so is there any guy to give me some suggestions about the vortex shedding time step, thanks

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