timestep for time dependent RANS -- CFD Online Discussion Forums

April 28, 2005, 04:46	timestep for time dependent RANS	#1
fab Guest Posts: n/a	Hi, I wonder if there is a size limit of the smallest time step for unsteady RANS models. I read that the averaging time T should be T>> Tf , where the turbulent fluctuations have the time scale Tf. Where is the problem setting T=Tf? Maybe, someone has an explanation. Regards! fab

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