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RESEARCH PAPERS

Mean and Turbulence Characteristics of Three-Dimensional Wall Jet on Convex Cylindrical Surfaces

[+] Author and Article Information
B. H. Lakshmana Gowda

Fluid Mechanics Laboratory, Department of Applied Mechanics, Indian Institute of Technology, Madras-600 036, India

V. S. B. Durbha

Fluid Control Research Institute, Palghat, India

J. Fluids Eng 121(3), 596-604 (Sep 01, 1999) (9 pages) doi:10.1115/1.2823510 History: Received March 13, 1997; Revised April 19, 1999; Online December 04, 2007

Abstract

The influence of convex curvature on the mean and turbulent characteristics of three-dimensional wall jet generated from a circular orifice geometry is reported in this paper. Mild, moderate, and strong curvature are considered. Detailed results on a plane surface are also obtained for comparison purposes. Among the mean properties, the decay rate of maximum velocity and the growth of length scales are significantly altered due to curvature effects. The turbulent components, both turbulent normal and shear stresses, show an increase with curvature parameter in a direction normal to the curved surfaces; however, there is very little change in the spanwise direction.

Copyright © 1999 by The American Society of Mechanical Engineers
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