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Numerical simulation of bank collapse of Shishou reach at the middle Yangtze River
Author(s): YAN Li-yan, ZHU Ye-hua, LIU Xiao-qin
Pages: 12-
15
Year: 2009
Issue:
21
Journal: Yangtze River
Abstract: 以石首河段为例,针对弯曲河段复杂的地形和河势,基于移动坐标的计算原理,建立移动坐标下的平面二维水沙数学模型.通过在泥沙运动方程中增加横向输沙项,对该模型进行扩展,使其能较好地模拟弯道环流的横向输沙效应;借助土力学中边坡稳定性理论,对河岸崩塌变形进行数值模拟.对该河段水流泥沙运动过程及河床演变过程的复演结果,表明该模型不仅能够模拟该河段水流运动规律,而且还能模拟河道的崩岸.
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