Compression waves in semi-circular channel

Journal article (2021)

Authors

Soechiarto University of Queensland
Wuthrich Hydraulic Structures and Flood Risk - CEG
Chanson University of Queensland
Research Group
Hydraulic Structures and Flood Risk (CEG) (TU Delft)
Copyright: © 2021 Emelia Dara Soechiarto, D. Wüthrich, Hubert Chanson
DOI: https://doi.org/10.1680/jwama.21.00022
Hydraulics & hydrodynamics Sewers & drains Waterways & canals
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Published Date

2021

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Hydraulic Engineering

Research Group

Hydraulic Structures and Flood Risk

Abstract

Partially-filled pipe flows are commonly observed in urban hydraulics, sewers and road crossings. The occurrence of a compression wave in the confined space may result from flash flooding, transient operation or accidental blockage, inducing explosive conditions. In this study, the propagation of a compression wave was studied in a relatively large-size laboratory flume with a semi-circular cross-section. The unsteady flow properties were recorded to understand how the circular cross-sectional shape impacted onto the surging water propagation. Both free-surface and velocity data indicated a marked impact of the compression wave passage, with large instantaneous fluctuations comparable and sometimes larger than observations of compression waves in rectangular channels.