Transonic Diffuser Design and Analysis

摘要：

A TBCC (Turbine Based Combined Cycle) engine used diffuser is designed and its performance is analyzed. The diffuser entrance is connected to the inlet exit. In the design process, it is divided into three parts,that are entrance part,two dimensional diffuse part and equal section part. Using geometry design method,and( CFD)Computational Fluid Dynamic numerical simulation to obtain the diffuser flow fields. From design and computational results, we can see that, total pressure and Mach number distribution of the diffuser section becomes more uniformly with the diffuser equal section part becomes longer, back static pressure increase lead to the normal shock in diffuse part moves up stream, in the arranged back pressure range, normal shock keeps down stream of the inlet throat, which satisfy the design requirement. At last,the paper usingmesoflapto control the flow separation and improve the diffuser performance.

关键词： Diffuser Boundary Layer Separation Control Mesoflap

作者: Zhang Jiandong Cai Yuanhu Wang Zhanxue Li Yan

作者单位: School of Propulsion and Energy,Northwestern Polytechnical University,Xian 710072,China The Secondary Communication Construction Engine Company of China,Xian,China

会议类型: 国际会议

会议名称: The 11th International Space Conference of Pacific-basin Societies(第11届环太平洋国际航天会议)

会议地点: 北京

会议语种:英文

页码: 350-354

在线出版日期: 2007-05-16（万方平台首次上网日期，不代表论文的发表时间）