Dynamic Behavior and Gust Simulation in an Unsteady Flow Wind Tunnel

被引：13

作者：

Rennie, R. Mark ^{[1
]}

Catron, Brian ^{[1
]}

Feroz, M. Zubair ^{[2
]}

Williams, David ^{[2
]}

He, Xiaowei ^{[2
]}

机构：

[1] Univ Notre Dame, Dept Aerosp & Mech Engn, Notre Dame, IN 46556 USA

[2] IIT, Dept Mech & Aerosp Engn, Chicago, IL 60616 USA

来源：

AIAA JOURNAL | 2019年 / 57卷 / 04期

关键词：

AIRFOIL;

D O I：

10.2514/1.J057186

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Rapid oscillations of test-section flow velocity can be generated in a wind tunnel using flow-control louvers installed in the wind-tunnel circuit; however, control of the test-section velocity must still account for the dynamic behavior of the wind tunnel itself. In this paper, the dynamic behavior of a low-speed closed-circuit wind tunnel in response to dynamic louver excitation is examined using an experimentally validated method-of-characteristics modeling approach. The model is used to develop and test a method of controlling the louver motions to simulate longitudinal gusts with a von Karman gust spectrum for length scales from 0.1 to 10 m. Results showing improvement of the wind-tunnel dynamic behavior using a Helmholtz resonator are also presented.

引用

页码：1423 / 1433

页数：11

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