Air-Water Flows and Head Losses on Stepped Spillways with Inclined Steps

Journal article (2022)

Authors

Yvan Arosquipa Nina University of Queensland
Rui Shi University of Queensland
Davide Wüthrich Hydraulic Structures and Flood Risk - CEG , University of Queensland
Hubert Chanson University of Queensland
Research Group
Hydraulic Structures and Flood Risk (CEG) (TU Delft)
Copyright: © 2022 Yvan Arosquipa Nina, Rui Shi, D. Wüthrich, Hubert Chanson
DOI: https://doi.org/10.1061/(ASCE)IR.1943-4774.0001701
Air-water flows Head losses Inclined steps Physical modeling Stepped spillways
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Published Date

2022

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Hydraulic Engineering

Research Group

Hydraulic Structures and Flood Risk

Abstract

On a stepped spillway, the staircase invert profile generates some intense turbulent dissipation during the spill, associated with a significant reduction of kinetic energy, as well as strong self-aeration. The present study focused on the effects of inclined downward steps on the air-water flow properties, flow resistance, and head losses because these mostly relate to spillway design. Some physical modeling was conducted in a relatively large facility with a 45° stepped chute (1V:1H) operating with Reynolds numbers 2.8×103