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  1. 1. School of Mechanical Engineering， Shandong University， Jinan 250061， China；
    2. Department of Machinery and Electricity, College of Taishan Polytechnic, Taian 271000， China；
    3. China National Heavy Duty Truck Jinan Fuqiang Power Co. Ltd， Jinan 250220， China
  • Received:2008-11-11 Revised:1900-01-01 Online:2009-04-16 Published:2009-04-16

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Abstract:

By analyzing the two definitions of the slip factor, it was found that the flow slip value is the key of the calculation of the slip factor. Considering the affect of the clogging of the boundary layer caused by stickiness, the boundary layer on the vane surface of the centrifugal pump was solved by boundary layer theory, and the displacement thickness of the boundary layer was calculated. The flow slip value on the vane was modified, and the calculation of the slip factor was more exact, which was validated by calculating a series of centrifugal pumps. The slip factor, the theoretical head and the fact head become smaller but closer to the experimental value.

Key words: centrifugal pump, slip factor, boundary layer

CLC Number: 

  • TH3
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