AUTOROTATION OF TWO TANDEM TRIANGULAR CYLINDERS

被引：0
|
作者：
Zhang, Xing [1 ]
Wang, Shizhao [1 ]
He, Guowei [1 ]
机构：
[1] Chinese Acad Sci, LNM, Inst Mech, Beijing 100190, Peoples R China
来源：
PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER CONFERENCE, VOL 1, PTS A-C | 2009年
关键词：
autorotation; vortex interaction; tandem triangular cylinders; phase graph; chaos; PRESSURE-CORRECTION METHOD; CIRCULAR-CYLINDERS; FLOW INTERFERENCE;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The autorotation of two tandem triangular cylinders at different gap distances is investigated by numerical simulations. At the Reynolds number of 200, three distinct regimes are observed with the increase of gap distance: namely, angular oscillation, quasi-periodic autorotation and 'chaotic' autorotation. For various gap distances, the characteristic of vortex shedding and vortex interaction are discussed. The phase graphs (angular acceleration vs. angular velocity) and the power spectra of moment are analyzed to characterize the motion of the cylinder. The Lyapunov exponent is also calculated to identify the existence of chaos.
引用
收藏
页码：1287 / 1292
页数：6
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