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RESEARCH PAPERS

Friction-Factor Data for Flat-Plate Tests of Smooth and Honeycomb Surfaces

[+] Author and Article Information
T. W. Ha, Dara W. Childs

Turbomachinary Laboratory, Mechanical Engineering Department, Texas A&M University, College Station, Texas 77843

J. Tribol 114(4), 722-729 (Oct 01, 1992) (8 pages) doi:10.1115/1.2920941 History: Received February 11, 1991; Revised July 01, 1991; Online June 05, 2008

Abstract

Friction-factors for honeycomb surfaces are measured with a flat plate tester. The flat plate test apparatus is described and a method is discussed for determining the friction-factor experimentally. The friction-factor model is developed for the flat plate test based on the Fanno Line Flow. The comparisons of the friction-factor are plotted for smooth surface and twelve-honeycomb surfaces with three-clearances, 6.9 bar to 17.9 bar range of inlet pressure, and 5,000 to 130,000 range of the Reynolds number. The optimum geometries for the maximum friction-factor are found as a function of cell width to cell depth and clearance to cell width ratios.

Copyright © 1992 by The American Society of Mechanical Engineers
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