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弯曲河道凹岸冲刷的环流分析

, PP. 83-88

Keywords: 弯曲河道,凹岸冲刷,环流,Channelbends,outerbankerosion,secondarycurrents

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Abstract:

:?在弯曲河道弯顶附近,通常存在一凹岸旋涡.本文首先分析了河道形态参数对这一凹岸旋涡存在的影响,然后说明了这一旋涡的存在与最大纵向流速位于水面以下有关.通过美国FallRiver的实测资料对涡量分量的计算和分析,进一步证实了这一旋涡的存在性.最后,根据上述结果和沿凹岸的边界切力分布,阐明了弯道凹岸冲刷的一般机理.

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