湍流
幂函数
水流动力
机械
沉积物
消散
明渠流量
泥沙输移
流量(数学)
体积流量
频道(广播)
功能(生物学)
环境科学
地质学
水文学(农业)
岩土工程
地貌学
数学
物理
工程类
数学分析
生物
热力学
电气工程
进化生物学
作者
Chih Ted Yang,Albert Molinas
出处
期刊:Journal of the Hydraulics Division
[American Society of Civil Engineers]
日期:1982-06-01
卷期号:108 (6): 774-793
被引量:61
标识
DOI:10.1061/jyceaj.0005874
摘要
Basic fluid mechanics and turbulence theories are applied to show that suspended sediment concentration at a given depth of an open channel flow is a function of the turbulence energy production rate at that depth. Depth-averaged suspended sediment concentration can be obtained by integrating a function of the turbulence energy production rate over the depth of flow which in turn is a function of unit stream power. Total sediment concentration can also be expressed as a function of unit stream power following the foresaid and a procedure similar to that proposed by Einstein. Comparisons of seven total load equations indicate that equations derived from the concept that the rate of sediment transport should be related to the rate of energy dissipation of the flow are more accurate than other equations for both laboratory flumes and natural rivers.
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