Investigation of Non-Axisymmetric Endwall Contouring in a Compressor Cascade

作     者：LIU Xiwu JIN Donghai GUI Xingmin 

作者机构：School of Energy and Power Engineering Beihang University Beijing 100191 China Co-innovation Center for Advanced Aero-engine Beijing 100191 China 

基　　金：supported by National Natural Science Foundation of China(51236001) National Basic Research Program of China(2012CB720201) Beijing Natural Science Foundation(No.3151002) 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2017年第26卷第6期

页      码：490-503页

摘      要：The current paper presents experimental and computational results to assess the effectiveness of non-axisymmetric endwall contouring in a compressor linear cascade. The endwaU was designed by an endwall design optimi- zation platform at 0° incidence （design condition）. The optimization method is based on a genetic algorithm. The design objective was to minimize the total pressure losses. The experiments were carried out in a compressor cascade at a low-speed test facility with a Mach number of 0.15. Four nominal inlet flow angles were chosen to test the performance of non-axisymmetric Contoured Endwall （CEW）. A five-hole pressure probe with a head diameter of 2 mm was used to traverse the downstream flow fields of the flat-endwall （FEW） and CEW cascades. Both the measured and predicted results indicated that the implementation of CEW results in smaller comer stall, and reduction of total pressure losses. The CEW gets 15.6% total pressure loss coefficient reduction at design condition, and 22.6% at off-design condition （＋7° incidence）. And the mechanism of the improvement of CEW based on both measured and calculated results is that the adverse pressure gradient （APG） has been reduced through the groove configuration near the leading edge （LE） of the suction surface （SS）.

主 题 词：Non-axisymmetric endwall contouring, Compressor cascade, Corner separation, Wind tunnel experiments Optimization 

学科分类：080704[080704] 08[工学] 0807[工学-电子信息类] 

核心收录：

D　O　I：10.1007/s11630-017-0966-z

馆 藏 号：203278487...