航空学报 > 2007, Vol. 28 Issue (增): 7-13

射流对压气机叶栅分离流控制的数值研究

周晓勃1,周盛1,侯安平1,郑新前2   

  1. 1 北京航空航天大学 能源与动力工程学院 航空发动机气动热力重点实验室 2 清华大学 汽车工程系
  • 收稿日期:2006-10-25 修回日期:2007-06-29 出版日期:2007-08-10 发布日期:2007-08-10
  • 通讯作者: 侯安平1

Numerical Investigation on Controlling Separated Cascade Flows by Using Jets

ZHOU Xiao-bo1,ZHOU Sheng1,HOU An-ping1,ZHENG Xin-qian2   

  1. 1 National Key Laboratory on Aeroengines, School of Jet Propulsion, Beijing University ofAeronautics and Astronautics  2 Department of Automotive Engineering, Tsinghua University
  • Received:2006-10-25 Revised:2007-06-29 Online:2007-08-10 Published:2007-08-10
  • Contact: HOU Anping1

摘要:

现代先进轴流压气机级负荷不断提高的发展趋势导致流动分离日益严重。借助数值模拟分别对非定常射流和定常射流进行了参数优化研究。结果表明:基于射流的主动流动控制能有效弱化或消除流动分离,不同射流方式存在不同的最优射流参数(射流方向、位置、速度和频率等),这就为利用射流控制轴流压气机分离流动的工程应用奠定了一定的理论基础。

关键词: 轴流压气机叶栅, 分离流动控制, 射流, 非定常旋涡流动, 流场时空结构

Abstract:

Separated flow is studied on a 2D cascade using steady and unsteady jets. The time-mean jeted flow rates are not more than 1% of the inlet mass flow rate. The results show that, by means of adding jets on the suction surface, the separated flow could be effectively controlled and the time-mean performance of flow filed could be remarkably improved. The optimal jet direction varies with each type of jets.

Key words: axial , compressor , cascade,  , separated , flow , control,  , jet,  , unsteady , vortex , flow,  , temporalspatial , structure

中图分类号: