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The effects of turbulence on the mean flow past square rods

Published online by Cambridge University Press:  20 April 2006

Y. Nakamura  and
Y. Ohya
Y. Nakamura
Affiliation:
Research Institute for Applied Mechanics, Kyushu University, Kasuga, 816, Japan
Y. Ohya
Affiliation:
Research Institute for Applied Mechanics, Kyushu University, Kasuga, 816, Japan
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Abstract

There are two main effects of turbulence on the mean flow past rods of square cross-section aligned with the approaching flow. Small-scale turbulence increases the growth rate of the shear layer, while large-scale turbulence enhances the roll-up of the shear layer. The consequences of these depend on the length of a square rod. The mean base pressure of a square rod varies considerably with turbulence intensity and scale as well as with its length.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 137 , December 1983 , pp. 331 - 345
Copyright
© 1983 Cambridge University Press

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