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RESEARCH PAPERS

Turbulent Flow in a Rotating Two Pass Smooth Channel

[+] Author and Article Information
Shou-Shing Hsieh, Ping-Ju Chen, Hsiang-Jung Chin

Department of Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan 80424

J. Fluids Eng 121(4), 725-734 (Dec 01, 1999) (10 pages) doi:10.1115/1.2823530 History: Received July 06, 1998; Revised September 10, 1999; Online December 04, 2007

Abstract

Laser-Doppler anemometry has been applied to approximately 2-D turbulent air flow in a rotating 2 pass channel of square cross section. The axis of rotation is normal to the axis of the duct, and the flow is radially outward/inward. The duct is of finite length and the walls are isothermal. Smooth channels are experimentally conducted with rotational speeds of 100, 200, and 300 rpm with ReH = 5000 and 10,000. The main features of the flow, flow separation and mean velocity as well as turbulent intensity at particular location along the downstream are presented. The measured flow field is found to be quite complex, consisting of secondary cross-stream and radially outward flows due to the Coriolis effects and centrifugal forces.

Copyright © 1999 by The American Society of Mechanical Engineers
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