Abstract: The test results of some proper-designed vortex generators for eliminating flow separation in the corner region of a two-dimentional diffuser are presented. A divergent concave-shaped surface is chosen as the wall of the diffuser.The experimental results show that the pressure recovery is increased and the total pressure distortion and total pressure fluctuation at the exit of the diffuser are decreased for the proposed diffuser.The effects of the constructional parameters of the yortex generators on the performance are discussed.

Key words: Subsonic inlet;Vortex generator;Separated flow;Control

摘要： 本文介绍了在最佳扩压规律的二元单边凹壁亚音扩压壁面上气流接近于分离,而角落区域气流有倒流的情况下,采用适当结构参数的叶片式涡流发生器消除角落区域气流分离和改善扩压壁面流动以达到提高扩压器压力恢复系数,减小出口截面流场畸变和动态总压脉动的试验研究结果.文章分析了叶片式涡流发生器主要结构参数对扩压器性能的影响.

关键词: 亚音速进气道;涡流发生器;分离流;控制