The influence of wedge diffuser blade number and divergence angle on the performance of a high pressure ratio centrifugal compressor

被引：3

作者：

Wang, Yi ^{[1
]}

Han, Ge ^{[2
]}

Lu, Xingen ^{[2
]}

Zhu, Junqiang ^{[2
]}

机构：

[1] Cent S Univ, Sch Aeronaut & Astronaut, Changsha 410083, Hunan, Peoples R China

[2] Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China

来源：

JOURNAL OF THERMAL SCIENCE | 2018年 / 27卷 / 01期

关键词：

Wedge diffuser; Blade number; Diffuser angle; High pressure ratio; Centrifugal compressor;

D O I：

10.1007/s11630-018-0979-2

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Wedge diffuser is widely used in centrifugal compressors due to its high performance and compact size. This paper is aimed to research the influence of wedge diffuser blade number and divergence angle on centrifugal compressor performance. The impact of wedge diffuser blade number on compressor stage performance is investigated, and then the wedge diffusers with different divergence angle are studied by varying diffuser wedge angle and blade number simultaneously. It is found that wedge diffuser with 27 blades could have about 0.8% higher adiabatic efficiency and 0.14 higher total pressure ratio than the wedge diffuser with 19 blades and the best compressor performance is achieved when diffuser divergence angle is 8.3A degrees .These results could give some advices on centrifugal compressor design.

引用

页码：17 / 24

页数：8

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