Strouhal number and multiple freq -- CFD Online Discussion Forums

January 11, 2012, 15:01	Strouhal number and multiple freq	#1
lakeat Senior Member Daniel WEI (老魏) Join Date: Mar 2009 Location: Beijing, China Posts: 689 Blog Entries: 9 Rep Power: 21	I have a question, As I calculating the flow around a square cylinder, there are inevitably multi-frequencies. So how did you guys calculate the Strouhal number then? I saw the definition of St as against vortex shedding frequency, but in a relatively high Re, there will be more than one vortex shedding frequency, how to judge which is the biggest, if there are two biggest... Will you do the average? __________________ ~ Daniel WEI ------------- Boeing Research & Technology - China Beijing, China Email

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