Highly turbulent Couette-Taylor bubbly flow patterns
Highly turbulent Couette-Taylor bubbly flow patterns
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DOI：
10.1017/s0022112000001592
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发表时间：
2000-11-10
影响因子：
3.7
通讯作者：
Wesfreid, JE
中科院分区：
文献类型：
--
作者：
Atkhen, K;Fontaine, J;Wesfreid, JE
本文给出了高泰勒数区上自由面上附加轴向流动Couette-Taylor系统的实验研究结果。在较大的泰勒数下，当内筒的转速增加时，在自由表面附近产生的气泡分布在整个试验截面上，并允许使用可视化技术来研究湍流的空间和时间特性。除了经典的行进泰勒旋涡外，还观察到了具有较高相速度的间歇脉冲旋涡。这些模式是根据转速和通过流的强度来描述的。
We present the results of experimental study of a Couette-Taylor system with super-imposed axial flow and an upper free surface, in the high Taylor number regime. At large Taylor numbers, when the rotational speed of the inner cylinder increases, bubbles created near the free surface are distributed throughout the test section and permit the study of the spatial and temporal properties of turbulent flows using visualization techniques. In addition to classic travelling Taylor vortices, intermittent pulses of vortices with higher phase velocities are also observed. These patterns are described in terms of the rotational speed and the intensity of the throughflow.