Convective Heat Transfer of Cubic Fin Arrays in a Narrow Channel

[+] Author and Article Information
M. K. Chyu, Y. C. Hsing

Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213

V. Natarajan

The BOC Group, Technical Center, Murray Hill, NJ 07974

J. Turbomach 120(2), 362-367 (Apr 01, 1998) (6 pages) doi:10.1115/1.2841414 History: Received February 01, 1996; Online January 29, 2008


The present study explores the heat transfer enhancement induced by arrays of cubic fins. The fin element is either a cube or a diamond in shape. The array configurations studied include both in-line and staggered arrays of seven rows and five columns. Both cubic arrays have the same geometric parameters, i.e., H/D = 1, S/D = X/D = 2.5, which are similar to those of earlier studies on circular pin-fin arrays. The present results indicate that the cube element in either array always yields the highest heat transfer, followed by diamond and circular pin-fin. Arrays with diamond-shaped elements generally cause the greater pressure loss than those with either cubes or pin fins. For a given element shape, a staggered array generally produces higher heat transfer enhancement and pressure loss than the corresponding inline array. Cubic arrays can be viable alternatives for pedestal cooling near a blade trailing edge.

Copyright © 1998 by The American Society of Mechanical Engineers
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