Bed-load Rate in View of Two Phase Flow Dynamics
Bed-load Rate in View of Two Phase Flow Dynamics
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从两相流动力学角度考虑床载率
DOI：
10.2208/prohe.41.789
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
T. Ito
中科院分区：
文献类型：
--
作者：
S. Egashira;K. Miyamoto;T. Ito
从固液两相流动动力学的角度，讨论了含床质流动和床质输运率。利用泥石流的本构关系和动量守恒方程描述了底部或运动层与非运动层之间的界面的动力学和运动学条件。推导了控制流场的方程，并对流速剖面、含沙量剖面、固液混合流厚度、流动阻力和输沙率进行了数值求解。这些结果强调，具有床载的流动可以被指定为泥石流的一个极限。
Discussions are made on the flow with bed-loads as well as on bed-load transport rates in view of solid-liquid two phase flow dynamics. Dynamic and kinematic conditions of the bottom or the interface between moving layer and non-moving one are described using constitutive relations of debris flows and momentum conservation equation. The equations governing flow field are derived, and solved numerically for velocity profile, sediment concentration profile, thickness of solid-liquid mixture flow, flow resistance, and sediment transport rates. These results emphasize that the flow with bed loads can be specified as a limit of debris flows.