Air-Water and Momentum Exchanges in Unsteady Surging Waters: An Experimental Study

Chanson, Hubert (2005) Air-Water and Momentum Exchanges in Unsteady Surging Waters: An Experimental Study. Experimental Thermal and Fluid Science, 30 1: 37-47. doi:10.1016/j.expthermflusci.2005.03.017

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Author Chanson, Hubert
Title Air-Water and Momentum Exchanges in Unsteady Surging Waters: An Experimental Study
Journal name Experimental Thermal and Fluid Science   Check publisher's open access policy
ISSN 0894-1777
Publication date 2005-10-01
Sub-type Article (original research)
DOI 10.1016/j.expthermflusci.2005.03.017
Open Access Status File (Author Post-print)
Volume 30
Issue 1
Start page 37
End page 47
Total pages 11
Place of publication New York, NY
Publisher Elsevier
Language eng
Subject 260502 Surfacewater Hydrology
290000 Engineering and Technology
300100 Soil and Water Sciences
290802 Water and Sanitary Engineering
300105 Applied Hydrology (Drainage, Flooding, Irrigation, Quality, etc.)
290800 Civil Engineering
290899 Civil Engineering not elsewhere classified
291199 Environmental Engineering not elsewhere classified
Abstract Flood waves resulting from dam breaks and flash floods have been responsible for numerous losses. In the present study, sudden flood releases were investigated down a large flume with a succession of abrupt drops. A new experimental technique was developed to obtain instantaneous void fractions, bubble count rates and velocities using arrays of conductivity probes. The results showed the surge propagating as a succession of free-jets and horizontal runoff flow motion downstream of each abrupt drop. A strong aeration of the surge leading edge was observed for all investigated flow conditions. In the horizontal runoff region, instantaneous velocity measurements highlighted an unsteady turbulent boundary layer. Practically, the study provides new information on free-surface aeration in surging waters in channels and on beach slopes.
Keyword surging waters
air-water measurements
momentum exchange
unsteady flow
shock
abrupt drop
dam break wave
physical modelling
Q-Index Code C1
Additional Notes Originally published as Chanson, Hubert (2005) Air–water and momentum exchanges in unsteady surging waters: An experimental study, Experimental Thermal and Fluid Science, 30 (1) : 37-47. Copyright 2005 Elsevier. All rights reserved. Single copies only may be downloaded for a user's private research or study.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Civil Engineering Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 8 times in Thomson Reuters Web of Science Article | Citations
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Created: Fri, 30 Sep 2005, 10:00:00 EST by Hubert Chanson on behalf of Library Corporate Services