Air entrainment and energy dissipation on gabion stepped weirs

D. Wuthrich, H. Chanson

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

3 Citations (Scopus)

Abstract

In the last three decades the design of stepped spillways regained some interest because of their suitability with new construction methods including gabion placement. In this study, the hydraulic performances of gabion stepped weirs were investigated experimentally in terms of the air-water flow properties and energy dissipation rate. A physical study was performed in a relatively large size facility with a 26.6° slope (1V:2H) and 0.10 m step height. For both gabion and impervious stepped weirs, a detailed comparison of the air-water flow properties was performed. The visual observations highlighted the seepage flow through the gabions, including a modification of the cavity flow dynamics, especially in the skimming flow regime. In skimming flows, higher velocities were measured at the downstream end of the gabion stepped chute, associated with lesser energy dissipation rates.

Original languageEnglish
Title of host publicationISHS 2014 - Hydraulic Structures and Society - Engineering Challenges and Extremes
Subtitle of host publicationProceedings of the 5th IAHR International Symposium on Hydraulic Structures
PublisherUniversity of Queensland
ISBN (Print)9781742721156
DOIs
Publication statusPublished - 2014
Externally publishedYes
Event5th IAHR International Symposium on Hydraulic Structures: Hydraulic Structures and Society - Engineering Challenges and Extremes, ISHS 2014 - Brisbane, QLD, Australia
Duration: 25 Jun 201427 Jun 2014

Publication series

NameISHS 2014 - Hydraulic Structures and Society - Engineering Challenges and Extremes: Proceedings of the 5th IAHR International Symposium on Hydraulic Structures

Conference

Conference5th IAHR International Symposium on Hydraulic Structures: Hydraulic Structures and Society - Engineering Challenges and Extremes, ISHS 2014
Country/TerritoryAustralia
CityBrisbane, QLD
Period25/06/1427/06/14

Keywords

  • Air entrainment
  • Energy dissipation
  • Gabion weirs
  • Physical modeling
  • Stepped spillways

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