重力流
电流(流体)
机械
湍流
不稳定性
混合(物理)
地质学
流量(数学)
主管(地质)
物理
内波
地貌学
海洋学
量子力学
出处
期刊:Jurnal Matematika dan Sains
[The Institute for Research and Community Services ITB]
日期:2010-03-18
卷期号:14 (3): 76-80
被引量:2
摘要
A series of laboratory experiments are used to examine the nature of a gravity current propagating along the base of a horizontal channel. The shear instability formed at the interface between two counter-flowing layers generates turbulence and mixing, particularly above the head of the current. While the resulting mixing is in part examined through its effects on the flow dynamics, the characteristics of the gravity current is determined by measuring the depth and speed of the current. The results for both shallow and deep currents reveal that the current depth is found to be 0.36-0.47 H, where H is the full water depth. The non-dimensional current speed is measured to be 0.48±0.02, independent of flow processes and dynamic variables.
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