Compression waves in semi-circular channel

Emelia Dara Soechiarto; Davide Wuthrich; Hubert Chanson

doi:10.1680/jwama.21.00022

Compression waves in semi-circular channel

Emelia Dara Soechiarto, Davide Wuthrich, Hubert Chanson^*

^*Corresponding author for this work

Hydraulic Structures and Flood Risk

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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.

Original language	English
Pages (from-to)	247-256
Number of pages	10
Journal	Proceedings of the Institution of Civil Engineers: Water Management
Volume	175
Issue number	5
DOIs	https://doi.org/10.1680/jwama.21.00022
Publication status	Published - 2021

Keywords

Hydraulics & hydrodynamics
Sewers & drains
Waterways & canals

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10.1680/jwama.21.00022

jwama.21.00022 (2)Accepted author manuscript, 1.85 MB
2022_Soechiarto.et.al_ICEWaterManagement_CompressionWavesSemiCircularChannelFinal published version, 6.19 MB

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AU - Soechiarto, Emelia Dara

AU - Wuthrich, Davide

AU - Chanson, Hubert

PY - 2021

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N2 - 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.

AB - 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.

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KW - Waterways & canals

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SP - 247

EP - 256

JO - Proceedings of the Institution of Civil Engineers: Water Management

JF - Proceedings of the Institution of Civil Engineers: Water Management

IS - 5

ER -

Compression waves in semi-circular channel

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