考虑边界层堵塞的离心泵滑移系数修正

山东大学学报(工学版)

考虑边界层堵塞的离心泵滑移系数修正

陈颂英1,庞雷1,曲延鹏1,李文峰2,宋秀琴3

1. 山东大学机械工程学院, 山东济南 250061; 2. 泰山职业技术学院机电系,
山东泰安 271000; 3. 中国重汽济南复强动力有限公司, 山东济南 250220

收稿日期:2008-11-11 修回日期:1900-01-01 出版日期:2009-04-16 发布日期:2009-04-16
通讯作者: 陈颂英

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

摘要/Abstract

摘要：

通过分析滑移系数两种定义形式的不同,可以得到流动滑移量是滑移系数计算的关键.考虑由粘性效应引起的边界层堵塞的影响,由边界层理论对离心泵叶片表面的边界层进行求解,计算出边界层位移厚度,从而对叶轮流动滑移量进行了修正,使滑移系数的计算更为精确.通过对一组离心泵的滑移系数和扬程的实际计算,结果表明：由于叶轮表面边界层堵塞的影响,使滑移系数计算值减小,使计算出的理论扬程和实际扬程也相应减小,与实验值更为接近.

关键词: 离心泵, 滑移系数, 边界层

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

中图分类号:

陈颂英1,庞雷1,曲延鹏1,李文峰2,宋秀琴3.

考虑边界层堵塞的离心泵滑移系数修正

[J]. 山东大学学报(工学版), 2009, 39(2): 75-77.

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