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RESEARCH PAPERS

Measurements of Wall Shear Stress in Axial Flow in a Square Lattice Rectangular Rod Bundle

[+] Author and Article Information
M. Abdelghany

Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506

R. Eichhorn

College of Engineering, Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506

J. Fluids Eng 108(2), 166-172 (Jun 01, 1986) (7 pages) doi:10.1115/1.3242556 History: Received October 22, 1982; Online October 26, 2009

Abstract

Hot film probe measurements of the distribution of the wall shear stress were made for axial flow along a rectangular 3 × 6 array of rods with a pitch to diameter ratio, P/D = 4/3, and a wall to diameter ratio, W/D = 2/3. Measurements were performed on rods at several locations and on two duct side walls at a position 62 hydraulic diameters from the entrance. Local shear stress maxima occur near the largest subchannel flow areas with the lowest maximum local shear stress on rods nearest the sidewalls. Maximum to the minimum shear stress ratio on an individual rod is largest for the corner rod. Side wall maximum local shear stress occurs in the first wall subchannel. Overall friction factors calculated from the wall shear stress measurements agree with those calculated from pressure drop data.

Copyright © 1986 by ASME
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