Unsteady turbulence in a tidal bore: field measurements in the Garonne River in October 2013

Chanson, H., Reungoat, D. and Keevil, C. (2014). Unsteady turbulence in a tidal bore: field measurements in the Garonne River in October 2013. In: Harun Chowdhury and Firoz Alam, The Proceedings of the 19th Australasian Fluid Mechanics Conference. 19AFMC: 19th Australasian Fluid Mechanics Conference, Melbourne, VIC, Australia, (1-4). 8-11 December, 2014.

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Author Chanson, H.
Reungoat, D.
Keevil, C.
Title of paper Unsteady turbulence in a tidal bore: field measurements in the Garonne River in October 2013
Conference name 19AFMC: 19th Australasian Fluid Mechanics Conference
Conference location Melbourne, VIC, Australia
Conference dates 8-11 December, 2014
Proceedings title The Proceedings of the 19th Australasian Fluid Mechanics Conference
Place of Publication Clayton, VIC, Australia
Publisher Australasian Fluid Mechanics Society
Publication Year 2014
Sub-type Fully published paper
Open Access Status
ISBN 9780646596952
Editor Harun Chowdhury
Firoz Alam
Issue Paper 118
Start page 1
End page 4
Total pages 4
Collection year 2015
Language eng
Formatted Abstract/Summary
A tidal bore is an unsteady rapidly-varied free-surface flow generated by the rapid rise in water elevation during the early flood tide, when the tidal range exceeds 4.5 to 6 m and the channel bathymetry amplifies the flood tidal wave. This study describes a detailed field invest igation conducted in the Garonne River (France). The tidal bore was undular on 19 October 2013 and the bore front was followed by some well-defined whelps. The instantaneous velocity data indicated large and rapid fluctuations of all velocity components during the tidal bore. Large Reynolds shear stresses we re observed during and after the tidal bore passage. Altogether the investigation characterised some unusual turbulence transient in a large river system.
Keyword Tidal bore
Garonne River
Field measurements
Unsteady turbulence
Turbulent mixing
Acoustic Doppler velocimetry ADV
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Wed, 03 Dec 2014, 06:31:27 EST by Hubert Chanson on behalf of School of Civil Engineering