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 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT : Sediment Re-Suspension due to Propeller Wash
Sediment Re-Suspension due to Propeller Wash
Author : Chiew Yee-Meng, Hsieh Shih-Chun, Xie Yin, Hong Jian-Hao and Cheng Nian-Sheng
When subjected to a strong swirling jet flow induced by a rotating ship?s propeller, the bed of a waterway may undergo significant changes. These changes not only will cause instability to quay structures and damage the protection work of the beds\banks of rivers, canals and seas but also re-suspend the bed particles. The mechanisms of temporal and spatial variations of seabed scour and sediment suspension are investigated in this study. The experimental results of the temporal variation of the maximum scour depth are highly consistent with the data of Hong et al. (2013). Four empirical equations are proposed to estimate the reference suspended sediment concentration and index of the shape of the concentration profile. The proposed modified Rouse equation gives reasonable prediction when compared with the experimental data.
File Size : 1,464,621 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
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