Unsteady Two-Dimensional Orifice Flow: A Large-Size Experimental Investigation

Chanson, Hubert, Aoki, Shin-ichi and Maruyama, Mamoru (2002) Unsteady Two-Dimensional Orifice Flow: A Large-Size Experimental Investigation. Journal of Hydraulic Research, 40 1: 63-71.

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Author Chanson, Hubert
Aoki, Shin-ichi
Maruyama, Mamoru
Title Unsteady Two-Dimensional Orifice Flow: A Large-Size Experimental Investigation
Journal name Journal of Hydraulic Research   Check publisher's open access policy
Publication date 2002-01-01
Sub-type Article
Volume number 40
Issue number 1
ISSN 0022-1686
Start page 63
End page 71
Total pages 9
Editor Marcelo H. Garcia
Place of publication Madrid
Publisher International Assoc of Hydraulic Engineering and Research
Collection year 2002
Language eng
Subject 290501 Mechanical Engineering
240502 Fluid Physics
240000 Physical Sciences
291100 Environmental Engineering
290600 Chemical Engineering
291800 Interdisciplinary Engineering
291200 Maritime Engineering
299900 Other Engineering and Technology
290802 Water and Sanitary Engineering
290800 Civil Engineering
770400 Coastal and Estuarine Environment
C1
Abstract Orifice flows were used as water clocks since the Antiquity up to the 16-th century. Today orifices and nozzles are used for measuring discharges. Most works were conducted with steady flow conditions and there is little information on the unsteady flow pattern. In this study, the writers describe an experimental investigation of an unsteady orifice flow discharging vertically. The study was conducted in a large-size facility with a rectangular orifice (0.75-m by 0.07-m) discharging up to 1.2 m3 in about 10 seconds. The study presents new information on the unsteady flow patterns, the discharge capacity and the velocity field in the reservoir. The results are compared with 'classical' orifice flow results.
Keyword orifice flow
unsteady flow
experimental study
clepsydra
velocity field
contraction coefficient
Q-Index Code C1

Document type: Journal Article
Sub-type: Article
Collections: Excellence in Research Australia (ERA) - Collection
School of Civil Engineering Publications
 
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Created: Fri, 02 Sep 2005, 10:00:00 EST by Hubert Chanson on behalf of School of Engineering