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Circular cylinder Strouhal number too high

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January 20, 2017, 10:12	Circular cylinder Strouhal number too high	#1
manu551 New Member Join Date: Nov 2016 Posts: 13 Rep Power: 10	Hi all, I'm modelling a Re=30470 flow past a circular rigid cylinder with Spalart-Allamras URANS model, but when I analyze the FFT of CL, frequency of vortex shredding is too high. Hence my Strouhal number is 0.225, against 0.19-0.20 as expected from literature. Why does it happen? Thanks.

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circular cylinder, frequency, spalart allamras, strouhal number, vortex shredding

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