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Mean flow and turbulence variation due to invert abrasion

  • Due to high bedload sediment transport, many sediment bypass tunnels (SBT) are prone to severe invert abrasion. However, there is little information about the flow characteristics in SBTs after invert abrasion initiated and progresses with time. In the present study, laboratory flume experiments were performed to investigate how the hydraulic conditions change after abrasion patterns developed on the invert. A typical invert abrasion pattern was produced using 3D-printing technique and implemented in the laboratory flume. Flow depths were measured to compare the initial with the abraded state. Furthermore, turbulence measurements using 2D-laser Doppler anemometry technique were performed to obtain the mean and turbulence flow characteristics. This paper describes results of these measurements focusing on the streamwise and vertical flow velocities, turbulence intensities and Reynolds shear stress.

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Author:C. Auel, M. Sanjou, T. Okamoto, S. Kobayashi, T. Sumi
URN:urn:nbn:de:hbz:836-opus-151721
DOI:https://doi.org/10.25974/fhms-15172
Parent Title (German):Proc. 2nd Int. Workshop on Sediment Bypass Tunnels, FP15, Kyoto, Japan
Publisher:Kyoto University
Document Type:Article in Conference Proceedings
Language:English
Date of Publication (online):2022/08/23
Year of first Publication:2017
Publishing Institution:FH Münster - University of Applied Sciences
Release Date:2022/09/02
Institutes:Bauingenieurwesen (BAU)
Publication list:Auel, Christian
Licence (German):License Logo Bibliographische Daten