计算物理 ›› 1993, Vol. 10 ›› Issue (3): 369-372.

• 论文 • 上一篇    下一篇

振动襟翼的非定常气动力特性研究

王保育, 李锋, 汪翼云, 崔尔杰   

  1. 北京空气动力研究所, 北京 100074
  • 收稿日期:1991-11-28 修回日期:1993-01-08 出版日期:1993-09-25 发布日期:1993-09-25

THE INVESTIGATION ON UNSTEADY AERODYNAMICAL CHARACTERISTICS OF AN OSCILLATING TRAIL-EDGE FLAP

Wang Baoyu, Li Feng, Wang Yiyun, Cui Erjie   

  1. Beijing Institute of Aerodynamics, Beijing 100074
  • Received:1991-11-28 Revised:1993-01-08 Online:1993-09-25 Published:1993-09-25

摘要: 本文使用数值模拟手段研究了襟翼振动这一复杂流场的流动特性,其中包括振动对流场影响的一般规律、襟翼振动频率及振幅大小的效应。数值模拟使用的出发方程为贴体坐标下的Euler方程,格式为Beam-Warming格式的改进型。数值结果表明:(1)随襟翼的振动激波强度和位置也相应的变化且这一变化滞后于偏角的变化;(2)襟翼振动频率越高对激波的影响较低频时越小;(3)振幅较大时使激波强度增强且激波的运动范围加大。

关键词: 振动襟翼, 非定常流动, 激波, 数值模拟

Abstract: Some aerodynamic characteristics of an oscillating trail-edge flap were investigated by numerical simulation, such as the unsteady effect of flow field and flow field comparison between different frequences or amplitudes. The Euler equations were solved by LU-ADI algorithm, the grid is C type grid. The numerical results showed that: (1) with the oscillation of trail-edge flap, the shock strength and its location are nonlinear to the motion of the trail-edge flap, (2) the higher the reduced frequence, the less the influence to variable pressure jump, (3) with the increase of the amplitude, the variations of shock strength and its location become more seriously.

Key words: oscillating trail-edge flap, unsteady flow, shock wave, numerical simulation