REVIEW - SELF-SUSTAINING OSCILLATIONS OF FLOW PAST CAVITIES

被引：615

作者：

ROCKWELL, D

NAUDASCHER, E

机构：

[1] Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA

[2] Institute of Hydromechanics, University of Karlsruhe, Karlsruhe

来源：

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME | 1978年 / 100卷 / 02期

关键词：

D O I：

10.1115/1.3448624

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Unstable floiv past cavities is grouped into fluid-dynamic, fluid-resonant, and fluid-elastic categories. Fluid-dynamic oscillations are attributable to instability of the cavity shear layer and are enhanced through a feedback mechanism. Fluid-resonant oscillations are governed by resonance conditions associated with compressibility or free-surface wave phenomena. Fluid-elastic oscillations are primarily controlled by the elastic displacements of a solid boundary. Experimental information and theoretical models for the frequencies and amplitudes of each of these categories of oscillations as well as a combination of them are discussed in detail. Effects of arrangements of cavities in groups and variations in cavity shape (rectangular, circular, triangular, whistle-type, Helmholtz-type) are reviewed. Means of attenuation of oscillations via geometrical modifications and mass addition are summarized. Finally, the effects of cavity oscillations on the time-mean cavity pressure, drag, and shear-layer characteristics are discussed. © 1978 by ASME.

引用

页码：152 / 165

页数：14

共 78 条

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