Experimental study of a positive surge. Part 1: Basic flow patterns and wave attenuation

Gualtieri, Carlo and Chanson, Hubert (2012) Experimental study of a positive surge. Part 1: Basic flow patterns and wave attenuation. Environmental Fluid Mechanics, 12 2: 145-159. doi:10.1007/s10652-011-9218-z

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Author Gualtieri, Carlo
Chanson, Hubert
Title Experimental study of a positive surge. Part 1: Basic flow patterns and wave attenuation
Language of Title eng
Journal name Environmental Fluid Mechanics   Check publisher's open access policy
Language of Journal Name eng
ISSN 1567-7419
Publication date 2012-04
Year available 2011
Sub-type Article (original research)
DOI 10.1007/s10652-011-9218-z
Open Access Status File (Author Post-print)
Volume 12
Issue 2
Start page 145
End page 159
Total pages 15
Place of publication Dordrecht, Netherlands
Publisher Springer
Collection year 2012
Language eng
Abstract A positive surge results from a sudden change in flow that increases the depth. It is the unsteady flow analogy of the stationary hydraulic jump and a geophysical application is the tidal bore. Positive surges are commonly studied using the method of characteristics and the Saint-Venant equations. The paper presents the results from new experimental investigations conducted in a large rectangular channel. Detailed unsteady velocity measurements were performed with a high temporal resolution using acoustic Doppler velocimetry and non-intrusive free-surface measurement devices. Several experiments were conducted with the same initial discharge (Q=0.060 m³/s) and 6 different gate openings after closure resulting in both non-breaking undular and breaking bores. The analysis of undular surges revealed wave amplitude attenuation with increasing distance of surge propagation were in agreement with Ippen and Kulin theory. Also, undular wave period and wave length data were relatively close to the values predicted by the wave dispersion theory for gravity waves in intermediate water depths.
Keyword Environmental hydraulics
Positive surges
Free surface measurements
Instantaneous velocity field
Physical modeling
Wave attenuation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online 9 August 2011.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2012 Collection
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Citation counts: TR Web of Science Citation Count  Cited 3 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 2 times in Scopus Article | Citations
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Created: Thu, 08 Mar 2012, 06:54:41 EST by Hubert Chanson on behalf of School of Civil Engineering