Hindered bedload settling as a model of sand bed planation by water waves
Hindered bedload settling as a model of sand bed planation by water waves
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阻碍床载沉降作为水波作用下沙床夷平的模型
DOI：
10.1038/297053a0
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发表时间：
1982
期刊：
影响因子：
64.8
通讯作者：
R. Hallermeier
中科院分区：
文献类型：
--
作者：
R. Hallermeier
流体流动和下伏活动床的表面形态之间的相互关系对于解释沉积构造和预测水力阻力是至关重要的。高能流可以侵蚀沉积物床的所有特征，过渡到这样一个平面床是很重要的波浪输沙过程1。下面的分析将河床夷平与在河床附近移动的非粘性泥沙浓度增加的受阻沉降中的阈值效应联系起来。计算的流体速度从由此产生的定量标准，床过渡同意广泛的实验室数据2，3在振荡流。
The interrelationships between fluid flows and the surface forms of underlying movable beds are crucial in interpreting sedimentary structures and in predicting hydraulic drag. Energetic flows can erode all features from a sediment bed, and transition to such a planar bed is important to the processes of sediment transport by waves1. The following analysis connects bed planation to a threshold effect in hindered settling with increasing concentration of noncohesive sediment moving near the bed. Calculated fluid velocity from the resulting quantitative criterion for this bed transition agrees with extensive laboratory data2,3 in oscillatory flows.