Prediction of the Transition Nappe/Skimming Flow on a Stepped Channel

Chanson, Hubert (1996) Prediction of the Transition Nappe/Skimming Flow on a Stepped Channel. Journal of Hydraulic Research, 34 3: 421-429. doi:10.1080/00221689609498490

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Author Chanson, Hubert
Title Prediction of the Transition Nappe/Skimming Flow on a Stepped Channel
Journal name Journal of Hydraulic Research   Check publisher's open access policy
ISSN 0022-1686
Publication date 1996-01-01
Year available 1996
Sub-type Article (original research)
DOI 10.1080/00221689609498490
Open Access Status File (Author Post-print)
Volume 34
Issue 3
Start page 421
End page 429
Total pages 9
Place of publication DELFT
Language eng
Subject 290802 Water and Sanitary Engineering
300105 Applied Hydrology (Drainage, Flooding, Irrigation, Quality, etc.)
290800 Civil Engineering
Abstract On a stepped channel, two distinct flow regimes may occur : nappe flow for low discharges and flat slopes, and skimming flow for larger flow rates. A simple analytical method to predict the onset of skimming flow is presented. The method is based upon the change of momentum direction at the impact of the jet on the downstream step. The results of the analysis are compared with existing experimental data. The onset of skimming flow is expressed in terms of the initial Froude number and jet angle. The generalisation of the study results enables to predict the onset of skimming flow and hence the risk of jet deflection at the first upstream step.
Keyword stepped spillway
nappe flow
skimming flow
stepped channel
flow regimes
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
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Citation counts: TR Web of Science Citation Count  Cited 34 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 39 times in Scopus Article | Citations
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Created: Thu, 01 Sep 2005, 10:00:00 EST by Hubert Chanson