航空学报 > 2015, Vol. 36 Issue (10): 3208-3217   doi: 10.7527/S1000-6893.2015.0034

基于谐振舵面的跨声速抖振抑制探究

高传强, 张伟伟, 叶正寅   

  1. 西北工业大学 航空学院, 西安 710072
  • 收稿日期:2014-09-22 修回日期:2015-01-28 出版日期:2015-10-15 发布日期:2015-01-29
  • 通讯作者: 张伟伟, Tel.: 029-88491342 E-mail: aeroelastic@nwpu.edu.cn E-mail:aeroelastic@nwpu.edu.cn
  • 作者简介:高传强 男, 博士研究生。主要研究方向: 流固耦合力学, 跨声速气动弹性力学。 Tel: 029-88491342 E-mail: gao_800866@163.com;张伟伟 男, 博士, 教授, 博士生导师。主要研究方向: 计算流体力学, 流固耦合力学与控制。 Tel: 029-88491342 E-mail: aeorelastic@nwpu.edu.cn;叶正寅 男, 博士, 教授, 博士生导师。主要研究方向: 计算流体力学, 非定常空气动力学, 新概念飞行器设计。 Tel: 029-88491342 E-mail: yezy@nwpu.edu.cn
  • 基金资助:

    国家自然科学基金 (11172237); 新世纪优秀人才支持计划 (NCET-13-0478)

Study on transonic buffet suppression with flapping rudder

GAO Chuanqiang, ZHANG Weiwei, YE Zhengyin   

  1. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2014-09-22 Revised:2015-01-28 Online:2015-10-15 Published:2015-01-29
  • Supported by:

    National Natural Science Foundation of China (11172237); Program for New Century Excellent Talents in University (NCET-13-0478)

摘要:

跨声速抖振引起的非定常脉动载荷会造成飞行器结构疲劳甚至引发飞行事故,所以跨声速抖振的控制研究逐渐成为航空领域的热点。采用基于Spalart-Allmaras(S-A)湍流模型的非定常雷诺平均方程开展了基于谐振舵面的跨声速抖振抑制研究。首先验证静止NACA0012翼型的抖振边界和频率特性,然后分别从舵偏平衡位置、舵偏幅值、频率以及相角等角度研究了谐振舵面的控制效果。舵偏平衡位置等效于减小了翼型的有效迎角;幅值和频率对抖振抑制效果影响较大,当舵面振荡频率与抖振频率接近时发生共振现象;相角对控制效果有一定影响,在270°相角附近,升力系数幅值减小了60%。在合适的舵偏幅值、频率以及相角组合下,谐振舵面有可能成为跨声速抖振的有效开环控制策略。

关键词: 激波, 跨声速流动, 抖振, 流动控制, 开环控制

Abstract:

Structural fatigue and flight accidents may be caused by the oscillating loads induced by buffet in transonic flight, so transonic buffet control is becoming a hot topic in the field of aviation. An investigation based on unsteady Reynolds-averaged Navier-Stokes equations and Spalart-Allmaras(S-A) turbulence model is presented to study the suppression of resonant rudder on the transonic buffet loads in this paper. First, the buffet onset and frequency characteristics for a stationary NACA0012 airfoil are verified with the experimental data. And then, the validation of the resonant rudder are studied from the variables of initial rudder angle, amplitude, frequency and phase angle. The initial rudder angle can reduce the actual angle of attack of the airfoil by the down effect. The amplitude and frequency are main parameters. In the case of rudder with a frequency very close to the buffet frequency, resonance occurs and the amplitudes of the lift and moment coefficients increase rapidly. The phase angle is also an important factor. Lift coefficient has an decrease of about 60% at phase angle towards 270°. Therefore, resonant rudder may be a feasible open-loop strategy to suppress buffet loads with an appropriate and accessible combination of amplitude, frequency and phase angle.

Key words: shock wave, transonic flow, buffet, flow control, open-loop control

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