关键词: 流场畸变;涡流发生器;性能分析;模拟试验;喷气发动机进气道

Abstract: The unsteadiness of Pilot pressure disfortion flow formed with axial-symmetric turbulance generator is investigated in this paper.The flow could be classified as steady one and unsteady one, according as whether the location and the dimension of low pressure zone in the flow change with time.The measurement repeatability of distortion factor in steady flow is better than that in unsteady flow.A simple and available method to simulate flow profiles is also discribed.

Key words: Flow distortion;Vortex generator;Performance analysis;Simulation test;Jet engine inlet