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 : Research on the Controls between Braided Channel and Meandering Channel by a 2-D Numerical Model
Research on the Controls between Braided Channel and Meandering Channel by a 2-D Numerical Model
Author : Yi XIAO, Shengfa YANG and Xuejun SHAO
This paper investigates the controls on the transformation mechanism among different channel patterns. A 2D depth-averaged numerical model is applied to produce the evolutions of channel pattern with complex interaction among water flow, sediment transport, and bank erosion. Variables as discharge, sediment supply, and vegetation are taken account in the numerical experiment, leading to changes from braided pattern to another one. What controls the transformation is discussed with the numerical results: Vegetation helps stabilize cut bank and bar surface, but not a key in the transition; a decrease in discharge and sediment supply could make a braided pattern to a meandering one. The conclusion is in agreement with the previous field work, confirming the two dimensional model?s potential in predicting the transition between different rivers and improving understanding of patterning processes.
File Size : 441,828 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT
Date Published : 18/07/2016
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