Undular and breaking tidal bores on fixed and movable gravel beds

Khezri, Nazanin and Chanson, Hubert (2012) Undular and breaking tidal bores on fixed and movable gravel beds. Journal of Hydraulic Research, 50 4: 353-363. doi:10.1080/00221686.2012.686200

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Author Khezri, Nazanin
Chanson, Hubert
Title Undular and breaking tidal bores on fixed and movable gravel beds
Journal name Journal of Hydraulic Research   Check publisher's open access policy
ISSN 0022-1686
Publication date 2012-08
Sub-type Article (original research)
DOI 10.1080/00221686.2012.686200
Open Access Status File (Author Post-print)
Volume 50
Issue 4
Start page 353
End page 363
Total pages 11
Place of publication Oxfordshire, United Kingdom
Publisher Taylor & Francis
Collection year 2013
Language eng
Abstract A tidal bore is a positive surge taking place during the flood tide with a large tidal range and the bore corresponds to the leading edge of the tidal wave propagating upstream. In this study, some physical modelling was performed to investigate the upstream bore propagation over fixed and movable gravel beds. Both undular and breaking bores were tested. The free-surface and velocity measurements were complemented by some observations of particle motion beneath the bore front. In the initially steady flow and beneath undular bores, no sediment motion was observed for the experimental setup. Beneath breaking bores, on the other hand, some upstream gravel bed load motion was observed behind the bore. The gravel bed particles were de-stabilised by the roller toe passage and advected upstream. The unsteady velocity data showed some damping of the transient recirculation on the movable gravel bed.
Keyword Tidal bores
Movable bed
Turbulent flow properties
Unsteady flow measurements
Physical modelling
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes The full bibliographic details are: KHEZRI, N., and CHANSON, H. (2012). "Undular and Breaking Tidal Bores on Fixed and Movable Gravel Beds." Journal of Hydraulic Research, IAHR, Vol. 50, No. 4, pp. 353-363 (DOI: 10.1080/00221686.2012.686200) (ISSN 0022-1686). The deposited PDF file is the preprint in line with the SHERPA/RoMEO policies for the journal.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2013 Collection
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 7 times in Scopus Article | Citations
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Created: Thu, 16 Aug 2012, 06:58:53 EST by Hubert Chanson on behalf of School of Civil Engineering