Experimental Investigation of Aerodynamic Characteristic of A High-loaded Working Cascade with Reactance 0.45

摘要：

Experimental investigation of aerodynamic characteristic of a high-loaded workingcascade with reactance 0. 45 is provided. Tests are carried out in a wide range of Mach number on the exit (Ma= 0. 7～1. 3). The flow structure in the blade passage is analyzed and the method to optimize the design of the working cascade is proposed. Level of profile losses under subsonic conditions (Ma= 0. 7～1. 0) is 0.04～ 0.05. Under supersonic conditions (Ma= 1. 0～1. 3) profile losses sharply increase and reach approximately 0. 063. Level of secondary losses under subsonic conditions is rather high and reaches 0. 014. Secondary losses under supersonic conditions essentially decrease and obtain 0. 003. It indicates increase in aerodynamic convergence and reduction in proportion of frictional losses in total losses. To decrease wave losses in the investigated cascade, it is necessary to reduce the value of angle of curvature to 2 /°～3 °; increase the value of angle of blade passage to 4 °～5 °.

关键词： high-loaded aerodynamic characteristic flow structure profile losses secondary losses

作者: Zheng Guanghua He Yihong

作者单位: Department of Engine and Energy, Northwestern Polytechnical University, Xian 710072, China Chinese Aviation Power Institude(CAPI), Zhuzhou 412002, China

会议类型: 国际会议

会议名称: 2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)

会议地点: 西安

会议语种:英文

页码: 1007-1009

在线出版日期: 2010-09-01（万方平台首次上网日期，不代表论文的发表时间）