AXISYMMETRICAL VORTEX BREAKDOWN .3. ONSET OF PERIODIC-FLOW AND CHAOTIC ADVECTION

被引：109
|
作者：
LOPEZ, JM
PERRY, AD
机构：
[1] Aeronautical Research Laboratory, Fishermens Bend, Victoria 3207
来源：
JOURNAL OF FLUID MECHANICS | 1992年 / 234卷
关键词：
D O I：
10.1017/S0022112092000867
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
When the fluid inside a completely filled cylinder is set in motion by the rotation of one endwall, steady and unsteady axisymmetric vortex breakdown is possible. Nonlinear dynamical systems theory is used to describe the changing kinematics of the flow as the speed of the rotating endwall is increased. Two distinct modes of oscillation have been found in the unsteady regime and the chaotic advection caused by the oscillations has been investigated. The results of this study are used to describe the filling and emptying processes of the vortex breakdown bubbles observed in flow visualization experiments.
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页码：449 / 471
页数：23
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