排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2012, Vol. 30 Issue (4): 373-378    DOI: 10.3969/j.issn.1674-8530.2012.04.001
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Influence of splitter blades on unsteady flow characteristics in centrifugal pump
 YUAN  Shou-Qi,   Ye-Li-Ting,   Zhang-Jin-Feng,   Yuan-Ye,   Zhang-Wei-Jie
 (Research Center of Fluid Machinery Engineering and Technology, Jiangsu University,Zhenjiang, Jiangsu 212013, China)
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Abstract Ansys-CFX software was adopted to simulate the unsteady flow field at different operating conditions in an entire centrifugal pump whose impeller was designed with and without splitter blades. To analyze the influence of design parameters of splitter blades on the unsteady flow field of the pump, the splitter blades were designed to have different inlet diameters and circumferential positions. The results show that when splitter blades are added, the pump head increases by 2%-12% and the pressure fluctuations at the impeller inlet, volute outlet and the interface of impeller and volute are reduced, thus the splitter blades have improved the “jetwake” flow structure. The influence of design parameters of splitter blades on the unsteady flow field in the pump is variable. When the inlet diameter of splitter blades is 106 mm and the blades are deviated to the suction side of the full length blades by 5° , the head is the highest and the pressure fluctuations are the lowest.
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Articles by authors
YUAN Shou-Qi
Ye-Li-Ting
Zhang-Jin-Feng
Yuan-Ye
Zhang-Wei-Jie
Key wordscentrifugal pump   splitter blades   unsteady   flow characteristics   numerical simulation     
Received: 2011-11-06; Published: 2012-07-30
Cite this article:   
YUAN Shou-Qi, Ye-Li-Ting, Zhang-Jin-Feng et al. Influence of splitter blades on unsteady flow characteristics in centrifugal pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(4): 373-378.
 
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