Influence of coupled boundary layer suction and bowed blade on flow   field and performance of a diffusion cascade

doi:10.1016/j.cja.2016.12.023

CORC > 北京大学 > 工学院

	Influence of coupled boundary layer suction and bowed blade on flow field and performance of a diffusion cascade
	Cao Zhiyuan ; Liu Bo ; Zhang Ting ; Yang Xiqiong ; Chen Pingping
刊名	CHINESE JOURNAL OF AERONAUTICS
	2017
关键词	Axial compressor Boundary layer suction Bowed blade Corner separation Coupled method Passage vortex
DOI	10.1016/j.cja.2016.12.023
英文摘要	Based on the investigation of mid-span local boundary layer suction and positive bowed cascade, a coupled local tailored boundary layer suction and positive bowed blade method is developed to improve the performance of a highly loaded diffusion cascade with less suction slot. The effectiveness of the coupled method under different inlet boundary layers is also investigated. Results show that mid-span local boundary layer suction can effectively remove trailing edge separation, but deteriorate the flow fields near the endwall. The positive bowed cascade is beneficial for reducing open corner separation, but is detrimental to mid-span flow fields. The coupled method can further improve the performance and flow field of the cascade. The mid-span trailing edge separation and open corner separation are eliminated. Compared with linear cascade with suction, the coupled method reduces overall loss of the cascade by 31.4% at most. The mid-span loss of the cascade decreases as the suction coefficient increases, but increases as bow angle increases. The endwall loss increases as the suction coefficient increases. By contrast, the endwall loss decreases significantly as the bow angle increases. The endwall loss of coupled controlled cascade is higher than that of bowed cascade with the same bow angle because of the spanwise inverse "C" shaped static pressure distribution. Under different inlet boundary layer conditions, the coupled method can also improve the cascade effectively. (C) 2016 Chinese Society of Aeronautics and Astronautics. Production and hosting by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.; China Postdoctoral Science Foundation; National Natural Science Foundation of China [51236006]; SCI(E); 中国科学引文数据库(CSCD); ARTICLE; 1; 249-263; 30
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/475341]
专题	工学院
推荐引用方式 GB/T 7714	Cao Zhiyuan,Liu Bo,Zhang Ting,et al. Influence of coupled boundary layer suction and bowed blade on flow field and performance of a diffusion cascade[J]. CHINESE JOURNAL OF AERONAUTICS,2017.
APA	Cao Zhiyuan,Liu Bo,Zhang Ting,Yang Xiqiong,&Chen Pingping.(2017).Influence of coupled boundary layer suction and bowed blade on flow field and performance of a diffusion cascade.CHINESE JOURNAL OF AERONAUTICS.
MLA	Cao Zhiyuan,et al."Influence of coupled boundary layer suction and bowed blade on flow field and performance of a diffusion cascade".CHINESE JOURNAL OF AERONAUTICS (2017).