Investigation of the flow in a diffusive S-duct inlet with and without secondary flow control

摘要：

An numerical investigation of the flow characteristics inside a diffusing S-duct inlet with and without vortex generators (VGs) was conducted. The primary discussion herein focus on development of secondary flow in the S-duct with and without VGs, pressure recovery and distortion at the exit are also discussed. Full three-dimensional Navier-Stokes equations are solved using finit volume method and κ ε ?turbulence model is employed. In order to validat the credibility of the numerical methods, predicted results of surface pressure are compared with flight test for the S-duct inlet without VGs, and it shows fairly good agreement. The result shows that VGs alter the flow characteristics in the S-duct and are effective in reducing distortion and ineffective in improving pressure recovery.

关键词： S-duct inlet swirl flow control vortex generator

作者: L.F.Zhang Z.X.Liu G.M.Guo X.F.Wang

作者单位: College of Power and Energy Engineering, Northwestern Polytechnical University, Xi’an 710072,China Chinese Flight Test Establishment, Xi’an 710089, China

会议类型: 国际会议

会议名称: The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)

会议地点: 上海

会议语种:英文

在线出版日期: 2007-08-15（万方平台首次上网日期，不代表论文的发表时间）