Rapid operation of a tainter gate: the transient flow motion

Sun, S., Leng, X. and Chanson, H. (2014). Rapid operation of a tainter gate: the transient flow motion. In: Hubert Chanson and Luke Toombes, Hydraulic structures and society - Engineering challenges and extremes. 5th IAHR International Symposium on Hydraulic Structures, Brisbane, Australia, (1-8). 25-27 June 2014. doi:10.14264/uql.2014.27

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Author Sun, S.
Leng, X.
Chanson, H.
Title of paper Rapid operation of a tainter gate: the transient flow motion
Conference name 5th IAHR International Symposium on Hydraulic Structures
Conference location Brisbane, Australia
Conference dates 25-27 June 2014
Proceedings title Hydraulic structures and society - Engineering challenges and extremes
Journal name ISHS 2014 - Hydraulic Structures and Society - Engineering Challenges and Extremes: Proceedings of the 5th IAHR International Symposium on Hydraulic Structures
Place of Publication Brisbane, Australia
Publisher The University of Queensland
Publication Year 2014
Year available 2014
Sub-type Fully published paper
DOI 10.14264/uql.2014.27
Open Access Status DOI
ISBN 9781742721156
Editor Hubert Chanson
Luke Toombes
Start page 1
End page 8
Total pages 8
Collection year 2015
Language eng
Abstract/Summary In water supply channels, the brusque operation of control gates may induce large unsteady flow motion called surges. Such an operation may be conducted to scour silted channels and sewers. Herein a physical study was conducted under controlled flow conditions to study the turbulent mixing upstream of a rapidly opening/closing tainter gate. The data suggested that the negative/positive surge generation was associated with large instantaneous free-surface fluctuations. The velocity measurements indicated significant variations in longitudinal velocity during the surge generation, as well as large fluctuations of all velocity components. The processes were associated with large Reynolds stress levels. The successive rapid closure and opening of undershoot tainter gate provided optimum conditions to scour silted canals, and the present results gave some detailed insights into the physical processes.
Keyword Tainter gate
Rapid opening
Transient flow motion
Turbulence
Free-surface motion
Physical modelling
Desilting
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Tue, 13 May 2014, 10:40:42 EST by Anthony Yeates on behalf of Scholarly Communication and Digitisation Service