Vorticity, Free Surface, and Surfactants
Vorticity, Free Surface, and Surfactants
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DOI：
10.1146/annurev.fl.28.010196.000503
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发表时间：
1996
影响因子：
27.7
通讯作者：
T. Sarpkaya
中科院分区：
文献类型：
--
作者：
T. Sarpkaya
本文的主要目的是描述一些分析和实验，这些分析和实验最终可以用来阐明流体力学现象的物理学，如旋涡的产生，自由表面附近湍流的准二维化，以及纯界面和污染界面处的反向能量级联。详细讨论了涡量通量;表面张力效应;基本方程和边界条件;表面活性剂的作用;界面相互作用的拓扑学;连接、断开和重新连接的特性;一些正则流（单涡和成对涡、喷流和涡环）;以及需要开发自由表面所限定的区域中的湍流的预测方法，固-流交界边界层和剪切流尾流湍流与自由表面的非线性相互作用。
The central intent of this paper is to describe a number of analyses and experi- ments that could eventually serve to elucidate the physics of fluid mechanics phe- nomena such as the generation of whirls, the quasi-two-dimensionalization of tur- bulence near the free surface, and the reverse energy cascade at pure and contam- inated interfaces. Discussed in some detail are the vorticity flux; surface-tension effects; basic equations and boundary conditions; the role of surfactants; topol- ogy of interfacial interactions; characteristics of connections, disconnections, and reconnections; a number of canonical flows (single and paired vortices, jets, and vortex rings); and the need for the development of prediction methods for turbulent flows in a region bounded by a free-surface, solid-fluid juncture boundary layer and the nonlinear interactions of shear flow wake turbulence with a free surface.