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- Title
Physical modeling of vanishing bores in open-channel flows.
- Authors
Li, Youkai; Chanson, Hubert
- Abstract
When an undular bore propagates upstream against a subcritical flow in a flat channel, its leading front may weaken and vanish. The present study physically investigated the entire decaying process of vanishing bores in a relatively large facility. The invert was made of mobile or fixed natural river gravel. Detailed sampling of water surface elevations and velocities was performed in combination with high-resolution photos and video recordings. Despite some increased turbulence characteristics linked to the bore front arrival, no sediment motion was observed underneath the vanishing bores. The quantitative results provide a unique benchmark dataset for further study of later-stage bore propagations.
- Subjects
CHANNEL flow; VIDEO recording; WATER sampling; TURBULENCE; ALTITUDES
- Publication
Canadian Journal of Civil Engineering, 2022, Vol 49, Issue 2, p289
- ISSN
0315-1468
- Publication type
Article
- DOI
10.1139/cjce-2020-0419