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RESEARCH PAPERS

Experiments on Steady and Oscillatory Flows at Moderate Reynolds Numbers in a Quasi-Two-Dimensional Channel With a Throat

[+] Author and Article Information
Y. Matsuzaki, T. Ikeda

Department of Aerospace Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan

T. Matsumoto

Kawasaki College of Applied Health Profession, Matsushima, Kurashiki 701-0114, Japan

T. Kitagawa

Railway Technical Research Institute, Hikaricho, Kokubunji, Tokyo 185-0034, Japan

J Biomech Eng 120(5), 594-601 (Oct 01, 1998) (8 pages) doi:10.1115/1.2834749 History: Received October 09, 1996; Revised February 25, 1998; Online January 23, 2008

Abstract

The study of steady and unsteady oscillatory static fluid pressures acting on the internal wall of a collapsible tube is essential for investigation of the complicated behavior observed when a flow is conveyed inside a tube. To examine the validity of two one-dimensional nonsteady theoretical flow models, this paper presents basic experimental observations of flow separation and reattachment and measured data on the static pressure distributions of the flow in a quasi-two-dimensional channel with a throat, together with information on the corresponding shape of the wall deflection and motion. For combinations of moderate Reynolds numbers and angles of the divergent segment of the channel, a smooth flow is separated from the wall downstream of the minimum cross section and reattached to the wall farther downstream. The measured data are compared with numerical results calculated by the two flow models.

Copyright © 1998 by The American Society of Mechanical Engineers
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