Geometrical Properties of Sand Wave
Geometrical Properties of Sand Wave
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DOI：
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发表时间：
1964
影响因子：
2.4
通讯作者：
M. Yalin
中科院分区：
文献类型：
--
作者：
M. Yalin
提出了沙波长度和高度的计算公式。这些公式适用于稳定、均匀的湍流和无黏性的床层物质。根据粒径雷诺数的大小来判断沙波是波纹还是沙丘。所提出的公式具有非常简单的数学形式，因此可以很容易地用于工程实践中预测移动床的不规则尺寸。这些公式是根据从实验室水槽和河流中获得的广泛实验数据确定的。所使用的实验数据涵盖了0.085毫米至2.45毫米的粒度范围和1.32厘米至92.5英尺的水深范围。
Formulas for the calculation of the length and height of the sand-waves are suggested. These formulas are valid for steady and uniform turbulent flow and for cohesionless bed material. The judgement as to whether sand-waves are ripples or dunes is made according to the value of the grain-size Reynolds number. The suggested formulas have an extremely simple mathematical form and can, therefore, be easily used in engineering practice for the prediction of the size of irregularities of a mobile bed. The formulas were determined from a wide range of experimental data obtained from both laboratory flumes and rivers. The experimental data used covers the range of grain-sizes 0.085 mm to 2.45 mm, and the range of water depths 1.32 cm to 92.5 ft.