AERODYNAMIC CHARACTERISTICS OF AN UNSTEADY SEPARATED FLOW

被引：13

作者：

FRANCIS, MS ^{[1
]}

KEESEE, JE ^{[1
]}

LANG, JD ^{[1
]}

SPARKS, GW ^{[1
]}

SISSON, GE ^{[1
]}

机构：

[1] USAF ACAD,DEPT AERONAUT,COLORADO SPRINGS,CO 80840

来源：

AIAA JOURNAL | 1979年 / 17卷 / 12期

关键词：

D O I：

10.2514/3.61312

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The results of experiments in which an unsteady separating flow was generated on the surface of an airfoil immersed in a subsonic wind-tunnel freest re am are discussed. An investigation of the global ensemble averaged vorticity field generated by oscillation of a fence-type spoiler located on one surface of the airfoil has confirmed the presence of a dynamically evolving vortex-like structure bearing a strong resemblance to the one encountered in classical dynamic stall. The growth and development of the shear layer region is characterized through isovorticity contour maps at select phase points during the motion cycle. A detailed description of flowfield behavior is provided for several values of the dimensionless spoiler frequency and freestream Reynolds number. The correlation of these results with corresponding surface pressure measurements is also presented. © 1979 American Institute of Aeronautics and Astronautics, Inc., All rights reserved.

引用

页码：1332 / 1339

页数：8

共 20 条

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