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On the buckling and the Strouhal law of fluid columns: the case of turbulent jets and wakes

✍ Scribed by J.G. Cervantes; F.J. Solorio; F. Méndez

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
160 KB
Volume
17
Category
Article
ISSN
0889-9746

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✦ Synopsis

An extension of the buckling model of oscillating fluid columns is presented that considers the nonuniform velocity profiles observed in various free turbulent flows. The buckling Strouhal number, defined as the reciprocal of the dimensionless wavelength, is calculated for some flows well documented in the literature. In all cases, the buckling Strouhal number is the same, despite the difference in flow configurations. The buckling model is compared with the universal Strouhal law, showing that the two models are equivalent to each other. Finally, a relationship between the maximum entropy generation and the difference between predicted and experimental Strouhal number is presented.

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