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RESEARCH PAPERS

Experimental Modeling of Circular Hydraulic Jump by the Impingement of a Water Column on a Horizontal Disk

[+] Author and Article Information
Mehdi N. Naraghi, Sunil Kumar

Department of Mechanical Engineering, Polytechnic University, Six Metrotech Center, Brooklyn, NY 11201

M. Karim Moallemi

Benex of NY, NY, NY 11101

M. H. N. Naraghi

Department of Mechanical Engineering, Manhattan College, Riverdale, NY 10471

J. Fluids Eng 121(1), 86-92 (Mar 01, 1999) (7 pages) doi:10.1115/1.2822017 History: Received May 31, 1996; Revised October 05, 1998; Online December 04, 2007

Abstract

An experimental study is performed to investigate the relationship between an unsub-merged water jet impinging onto a horizontal surface and radius of hydraulic jump. Experiments are undertaken over a wide range of pipe Reynolds numbers for which the pipe flow is laminar. The laminar impinging jet produced a smooth circular hydraulic jump, at which the film thickness experienced a sudden increase in thickness. Effects of various parameters on a stable and stationary hydraulic jump are studied. The impingement point radius ri , is taken as a characteristic length of the film flow, and correlations are obtained for radius of hydraulic jump in terms of various dimensionless parameters.

Copyright © 1999 by The American Society of Mechanical Engineers
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