Discussion of "Characteristics of free overfall for supercritical flows"

Chanson, Hubert and Toombes, Luke (2007) Discussion of "Characteristics of free overfall for supercritical flows". Canadian Journal of Civil Engineering, 34 8: 1025-1026. doi:10.1139/L07-102

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Author Chanson, Hubert
Toombes, Luke
Title Discussion of "Characteristics of free overfall for supercritical flows"
Journal name Canadian Journal of Civil Engineering   Check publisher's open access policy
ISSN 0315-1468
Publication date 2007-08-01
Year available 2007
Sub-type Discussion - responses, round table/panel discussions, Q&A, reply
DOI 10.1139/L07-102
Open Access Status File (Author Post-print)
Volume 34
Issue 8
Start page 1025
End page 1026
Total pages 2
Place of publication Ottawa, Canada
Publisher National Research Council of Canada
Collection year 2007
Language eng
Subject 290000 Engineering and Technology
290800 Civil Engineering
290802 Water and Sanitary Engineering
Abstract It was claimed that the characteristics of free overfall with supercritical inflow conditions were not studied to date. That is incorrect and the Canadian Journal of Civil Engineering published a pertinent study about 10 years ago (Chanson and Toombes 1998). After a review of that study, it will be emphasised that the writers' results must be considered with caution. The supercritical flow at an abrupt drop is strongly three-dimensional and unsteady, and this aspect has direct implications for engineering designs.
Keyword Free overfall
Supercritical flows
Drop structure
Nappe impact
Sidewall standing waves
Shock waves
Air entrainment
Flow aeration
References Chanson, H. 1995. Hydraulic Design of Stepped Cascades, Channels, Weirs and Spillways. Pergamon, Oxford, UK, 292 pages. Chanson, H., and Toombes, L. 1997. Flow Aeration at Stepped Cascades. Research Report No. CE155, Department of Civil Engineering, University of Queensland, Australia, June, 110 pages. Chanson, H., and Toombes, L. 1998. Supercritical Flow at an Abrupt Drop : Flow Patterns and Aeration. Canadian Journal of Civil Engineering, Vol. 25, No. 5, Oct., pp. 956-966. Toombes, L. 2002. Experimental Study of Air-Water Flow Properties on Low-Gradient Stepped Cascades. Ph.D. thesis, Department of Civil Engineering, The University of Queensland, Australia. Toombes, L., and Chanson, H. 2005. Air-Water Mass Transfer on a Stepped Waterway. Journal of Environmental Engineering, ASCE, Vol. 131, No. 10, pp. 1377-1386.
Q-Index Code CX
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes The full bibliographic details are : CHANSON, H., and TOOMBES, L. (2007). "Characteristics of Free Overfall for Supercritical Flows. Discussion." Canadian Journal of Civil Engineering, NRC, Vol. 34, No. 8, pp. 1025-1026 (DOI:10.1139/L07-102) (ISSN 0315-1468).

Document type: Journal Article
Sub-type: Discussion - responses, round table/panel discussions, Q&A, reply
Collections: Excellence in Research Australia (ERA) - Collection
School of Civil Engineering Publications
2008 Higher Education Research Data Collection
ERA 2012 Admin Only
 
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Created: Thu, 31 Jan 2008, 13:37:35 EST by Hubert Chanson on behalf of School of Engineering