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 : 34th Congress - Brisbane (2011) : THEME 4: Responding to Shifting Water Resources : Development of large scale vortex around t-type and l-type groynes
Development of large scale vortex around t-type and l-type groynes
Author : A.Kadota1 and K. Suzuki2
There are several types of groyne, such as T-type and L-type groynes, that have been constructed worldwide in accordance with different river environments. However, little information has been obtained on the structures of large-scale vortex-development around differently shaped groynes. Because these flow structures are expected to significantly affect the formation of sand waves further downstream, this phenomenon should be considered systematically and in detail. To reveal such flow effects, flow is visualized around several types of groyne by means of particle tracking velocimetry, which was developed especially for estimating large-velocity difference. To discuss the flow pattern around the groynes, Analyses of conditional sampling and spectral distribution and Weiss function are applied to reveal the coherent structures. The results show strong and large vortex development from the tips of groynes toward downstream. The differences in flows around several types of groyne are the distributions of large areas of coherent vortex downstream.
File Size : 1,201,019 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 4: Responding to Shifting Water Resources
Date Published : 01/07/2011
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