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Mean and turbulence characteristics of three-dimensional wall jets

Published online by Cambridge University Press:  29 March 2006

N. V. Chandrasekhara Swamy
Affiliation:
Fluid Mechanics Laboratory, Department of Applied Mechanics, Indian Institute of Technology, Madras 36
P. Bandyopadhyay
Affiliation:
Fluid Mechanics Laboratory, Department of Applied Mechanics, Indian Institute of Technology, Madras 36 Present address: Engineering Laboratory, University of Cambridge.

Abstract

This paper reports experimental investigations on the characteristic decay and the radial-type decay regions of a three-dimensional isothermal turbulent wall jet in quiescent surroundings. The velocity and the length scale behaviour for both the longitudinal and the transverse directions are studied, and compared with the results of other workers. The estimated skin friction is discussed in relation to the available data from earlier investigations. Wall jet expansion rates and the behaviour of skin friction are also discussed. The rate of approach of turbulence components to a self-similar form is found to be influenced by the fact that the expansion rate of the wall jet in the longitudinal direction is different from that in the transverse.

Type
Research Article
Copyright
© 1975 Cambridge University Press

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