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Frequency of the Karman Vortex Streets in Tube Banks

Published online by Cambridge University Press:  04 July 2016

Y. N. Chen
Y. N. Chen*
Affiliation:
Research Laboratory for Vibration and Acoustics, Sulzer Brothers Ltd, Winterthur, Switzerland
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Extract

In the note “Aerodynamically induced vibration in coolers”, by D. G. Mabey (pp 876-7, December 1965 Journal), the results of Grotz and Arnold concerning the frequency of the Karman vortex streets in tube banks, such as in heat exchangers, are mentioned, as is also the law of the linear relation between f(T—d)/V and (2T-L)/d, as found by Putnam, where

f frequency of vortex shedding

T transverse distance

L longitudinal distance between tubes

d outer diameter of tube

V mean stream velocity based on minimum flow area between the tubes

This linear relation has no theoretical justification and cannot be accurate, as is admitted by the author cited. A further investigation on a theoretical basis seems to be necessary.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 71 , Issue 675 , March 1967 , pp. 211 - 214
Copyright
Copyright © Royal Aeronautical Society 1967

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References

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