IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 6 - MARITIME HYDRAULICS AND COASTAL ENGINEERING : Turbulent Mixing in Breaking Tidal Bores: Comparison between Field and Laboratory Data
Turbulent Mixing in Breaking Tidal Bores: Comparison between Field and Laboratory Data
Author : Yit-Haw Toi and Hubert Chanson
When a river mouth has a funneled shape with a tidal range exceeding 4 to 6 m, the river may experience a tidal bore, that is a series of waves propagating upstream as the tidal flow turns to rising. Recent studies demonstrated the significant impact of tidal bores on the environmental system and the ecology of the estuarine zone. Herein the unsteady turbulent mixing induced by a breaking tidal bore was documented based upon new physical experiments. Detailed free-surface and velocity measurements were performed with a high-temporal temporal resolution. The physical results were compared systematically with a recent field data set (Mouaz‚ et al. 2010). The propagation of breaking tidal bores was associated with a sharp free-surface discontinuity at the bore front, followed by some transient recirculation next to the bed. A key finding was the close agreement in terms of dimensionless free-surface and velocity data between laboratory and field observations.
File Size : 335,402 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 6 - MARITIME HYDRAULICS AND COASTAL ENGINEERING
Date Published : 18/07/2016
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