ON AERODYNAMIC NOISE GENERATION FROM VORTEX SHEDDING IN ROTATING BLADES

被引：12
|
作者：
MARTIN, BT
BIES, DA
机构：
[1] Department of Mechanical Engineering, University of Adelaide, Adelaide
来源：
JOURNAL OF SOUND AND VIBRATION | 1992年 / 155卷 / 02期
关键词：
D O I：
10.1016/0022-460X(92)90514-X
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The interaction of the shed wakes of plates in a cascade with each following plate is investigated in a water tunnel and shown to provide an explanation for an observed very powerful aerodynamic noise source. In particular, the noise generation of an idling circular saw may be explained as due to the interaction of the wake shed by an upstream tooth with the leading edge of the following downstream tooth. When a vortex travelling downstream in the gullet between teeth encounters the leading edge of the downstream tooth it is deflected out of the gullet into the main stream. The associated impulses which the teeth encounter give rise to the radiated noise. © 1992.
引用
收藏
页码：317 / 324
页数：8
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