Study on effects of blade number on stall characteristics for centrifugal pump impeller

被引：8
|
作者：
Zhou P. [1 ,2 ]
Wang F. [1 ]
Yao Z. [1 ]
机构：
[1] College of Water Resources and Civil Engineering, China Agricultural University, Beijing
[2] College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2016年 / 52卷 / 10期
关键词：
Alternative stall; Blade number; Centrifugal pump; Rotating stall;
D O I：
10.3901/JME.2016.10.207
中图分类号：
学科分类号：
摘要：
In order to investigate the effects of blade number on stall characteristics for a centrifugal pump impeller, a developed Sub-grid scale model is applied to a centrifugal pump impeller with different blade number. The motion rule and characteristic parameters of stall cells are obtained, including the number, stall frequency and rotation speed. The results show that the blade number has significant effects on stall types. As the blade number is even, the alternative stall phenomenon occurs. Otherwise, when it is odd, the rotating stall phenomenon appears. Furthermore, the blade number also has influence on the characteristic parameters of stall cells. Under the alternative stall condition, as the increase of blade number, the number of stall cells increases, while the stall frequency decreases. The stall frequency of 4 blades is 2.4 times as large as that of 6 blades. Under the rotating stall condition, with the increase of blade number, the number of stall cells also increased. The speed of stall cells of the impeller with 7 blades is 1.8 times as fast as that with 5 blades. The stall frequency of 7 blades is 3.8 times as large as that with 5 blades. © 2016 Journal of Mechanical Engineering.
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页码：207 / 212
页数：5
相关论文
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