Free-surface and seepage bubbly flows on a gabion stepped spillway weir: experimental observations

Zhang, Gangfu and Chanson, Hubert (2015). Free-surface and seepage bubbly flows on a gabion stepped spillway weir: experimental observations. In: Arthur Mynett, Proceedings of the 36th IAHR World Congress: Deltas of the Future and What Happens Upstream. 36th IAHR World Congress, The Hague, Netherlands, (6624-6633). 28 June-3 July2015.

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Name Description MIMEType Size Downloads
Author Zhang, Gangfu
Chanson, Hubert
Title of paper Free-surface and seepage bubbly flows on a gabion stepped spillway weir: experimental observations
Conference name 36th IAHR World Congress
Conference location The Hague, Netherlands
Conference dates 28 June-3 July2015
Convener IAHR
Proceedings title Proceedings of the 36th IAHR World Congress: Deltas of the Future and What Happens Upstream
Place of Publication The Hague, Netherlands
Publisher IAHR
Publication Year 2015
Sub-type Fully published paper
Open Access Status Not Open Access
ISBN 9789082484601
Editor Arthur Mynett
Start page 6624
End page 6633
Total pages 10
Collection year 2016
Language eng
Abstract/Summary Gabion stepped spillways are presented as a viable option for low to medium head designs. The material contributes to stability, low cost, flexibility, porosity and noise reduction. The steps also enhance energy dissipation, and reduce the requirement of a stilling basin. This paper constitutes a systematic study of the free-surface and seepage bubbly flows using a combination of phase-detection probe and high-speed video camera. The two-phase flow properties and turbulence characteristics in the free-surface flow were documented. The bubbly motion through the gabion material was analysed. The results demonstrated evidence of strong air-water mixing between the free-surface and seepage flows, and highlighted a modified cavity flow pattern as a result.
Keyword Gabion stepped spillways
Seepage flow
Air-water flow
Physical modelling
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Collections: School of Civil Engineering Publications
Official 2016 Collection
 
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Created: Sat, 21 Nov 2015, 23:27:03 EST by Hubert Chanson on behalf of School of Civil Engineering