排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2012, Vol. 30 Issue (2): 167-170    DOI: 10.3969/j.issn.1674-8530.2012.02.009
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Influence of impeller and guide vane blade number on pressure fluctuation in mixedflow pump
 ZHANG  De-Sheng, SHI  Wei-Dong, WANG  Chuan, WANG  Guo-Tao, ZOU  Ping-Ping

(Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Jiangsu 212013, China)
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Abstract To investigate into the pressure fluctuation feature caused from the rotorstator interaction between the impeller and the diffuser in a mixedflow pump, the unsteady flow field in the pump with different numbers of blades in the impeller and the diffuser were numerically simulated based on the standard k-ε turbulence   model, SIMPLEC algorithm and sliding mesh model. The pressure fluctuation data were acquired by monitoring fluid pressure at the points located at the impeller and diffuser. The influence of number of blades and blade thickness on the pressure fluctuation was discussed in timedomain. The results show that the number of impeller blades is the main factor causing pressure fluctuation in the whole flow field. The pressure fluctuation amplitudes in the inlet and outlet to the impeller is consistently increased when the number of impeller blades is reduced; while the pressure fluctuation at the impeller outlet and in the diffuser is less affected by the number of guide vanes. Those conclusions will provide a reference for hydraulic design of mixedflow pumps and their stable operations.
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Articles by authors
ZHANG De-Sheng
SHI Wei-Dong
WANG Chuan
WANG Guo-Tao
ZOU Ping-Ping
Key wordsmixedflow pump   blade number   pressure fluctuation   unsteady flow   numerical simulation     
Received: 2011-09-22; Published: 2012-03-30
Cite this article:   
ZHANG De-Sheng,SHI Wei-Dong,WANG Chuan et al. Influence of impeller and guide vane blade number on pressure fluctuation in mixedflow pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(2): 167-170.
 
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