关键词: 进气道;流动特性;边界层控制

Abstract: This paper presents the experimental results of the flow characteristic in a high aspect ratio and highly curved S-berid subsonic diffuser.The flow feature is analysed by using the flow visualization,the static pressure distribution,the total pressure contour map and the swirl flow field at exit.The paper also presents the result of separation control in the S-bend diffuser.The experimental result shows that the separation region can be reduced and the diffuser performance can be improved by using the boundary-layer submerged vortex generators if the location installed and the geometrical parameters of the vortex generator are selected property.

Key words: Inlet;Flow characteristic;Boundary layer control