排灌机械工程学报
   Home  About Journal  Editorial Board  Author Center  Subscriptions    中文 
Journal of Drainage and Irrigation Machinery Engin  2012, Vol. 30 Issue (3): 283-288    DOI: 10.3969/j.issn.1674-8530.2012.03.008
article Current Issue | Next Issue | Archive | Adv Search Previous Articles  |  Next Articles  
Effect of tip clearance on performance of low specific speed centrifugal pump with semiopen impeller
 CUI  Bao-Ling1, HUANG  Da-Gang1, SHI  Pei-Qi1, JIN  Qing-Ming2
(1. Laboratory of Fluid Transmission and Application, Zhejiang SciTech University, Hangzhou, Zhejiang 310018, China;
2. Zhejiang Tiande Pumps Co. Ltd., Cangnan, Zhejiang 325800, China)
 Download: PDF (2314 KB)   HTML (1 KB)   Export: BibTeX | EndNote (RIS)      Supporting Info
Abstract In order to analyze the effects of tip clearance on the flow and performance of low specific speed highspeed centrifugal pump with a semiopen impeller, the inner flow field in a pump with the specific  speed ns=19.3 was numerically simulated based on the Navier-Stokes equations and the Spalart-Allmaras turbulence model at the tip clearances 0.5, 1.1 and 2.5 mm. The performance of the centrifugal pump was measured as well.The results show that the flow in the impeller is improved with a bigger clearance, but the hydraulic loss caused from the circular flow in the impeller at a relatively big clearance is larger than that at a more tight clearance, so the head and efficiency were decreased with increasing tip clearance. Also, the relative velocity and static pressure of fluid in the clearance were reduced at the middle and trailing edge of blade with increasing tip clearance, especially the relative velocity. The static pressure shows a nearly linear relation to radius. The tangential and radial velocity along the axial direction in the impeller passages were lowered with increasing clearance. Comparison of the results simulated with the experimental data suggests CFD method is quite able to simulate a change in the performance due to varying tip clearance.
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
CUI Bao-Ling
HUANG Da-Gang
SHI Pei-Qi
JIN Qing-Ming
Key wordscentrifugal pump   low specific speed   semi open impeller   tip clearance   numerical simulation     
Received: 2011-08-25; Published: 2012-04-10
Cite this article:   
CUI Bao-Ling,HUANG Da-Gang,SHI Pei-Qi et al. Effect of tip clearance on performance of low specific speed centrifugal pump with semiopen impeller[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(3): 283-288.
 
[1] 参考文献(References)
[2] 操松林,丁强民,许元兰,等. 开式叶片泵叶轮间隙的试验研究[J]. 流体机械,2002,30(9):4-6.
Cao Songlin,Ding Qiangmin,Xu Yuanlan,et al. Experimental research on the gap between open impeller and casing of vane pump \[J\]. Fluid Machinery, 2002,30(9):4-6. (in Chinese)
[3] Zhu Zuchao. Experiment study on highspeed centrifugal pumps with different impellers[J]. Journal of Mechanical Engineering, 2002, 15(4): 372-375.
[4] Tahsin E, Mesut G, Reinhard S. Effects of tip clearance and impeller geometry on the performance of semiopen ceramic centrifugal fan impellers at elevated temperatures[J]. Experimental Thermal and Fluid Science, 2006, 30: 565-577.
[5] Kitano Majidi. Numerical study of unsteady flow in a centrifugal pump[J]. Journal of Turbomachinery, 2005, 127:363-371.
[6] Cui Baoling, Lin Yonggang, Jin Yingzi. Numerical simulation of flow in centrifugal pump with complex impeller[J]. Journal of Thermal Science, 2011, 20(1):47-52.
[7] 张剑慈,朱祖超,崔宝玲. 开式叶轮高速离心泵叶形对泵内流场的影响分析[J]. 农业机械学报,2007,38(10):41-44.
Zhang Jianci, Zhu Zuchao, Cui Baoling. Infection of pump flow field caused by impeller type of openimpeller highspeed centrifugal pump[J]. Transactions of the Chinese Society for Agricultural Machinery, 2007, 38(10):41-44. (in Chinese)
[8] Matthias Schleer, Reza S Abhari. Clearance effects on the evolution of the flow in the vaneless diffuser of a centrifugal compressor at part load condition[J]. Journal of Turbomachinery, 2008, 130:1-9.
[9] Yoon Yong Sang, Song Seung Jin, Shin HyounWoo. Influence of flow coefficient, stagger angle, and tip clearance on tip vortex in axial compressors[J]. Journal of Fluids Engineering, 2006, 128: 1274-1280.
[10] 李洪昌,李耀明,徐立章,等.风筛式清选装置气流场的数值模拟与分析\[J\].江苏大学学报:自然科学版,2010,31(4):378-382.
Li Hongchang, Li Yaoming, Xu Lizhang, et al. Numerical simulation and analysis on flow field of airandscreen cleaning mechanism\[J\]. Journal of Jiangsu University: Natural Science Edition, 2010, 31(4):378-382. (in Chinese)
[11] 施卫东,张华,陈斌,等.不同叶顶间隙下的轴流泵内部流场数值计算[J].排灌机械工程学报,2010,28(5):374-377.
Shi Weidong, Zhang Hua, Chen Bin, et al. Numerical simulation of internal flow field in axialflow pump with different blade tip clearance sizes[J].Journal of Drainage and Irrigation Machinery Engineering, 2010, 28(5): 374-377. (in Chinese)
[12] Wu Y, Li Q, Chu W, et al. Numerical investigation of the unsteady behaviour of tip clearance flow and its possible link to stall inception[J]. Journal of Power and Energy, 2009, 224: 85-96.
[1] LIU Hou-Lin, YANG Dong-Sheng, TAN Ming-Gao, WANG Kai, ZHUANG Su-Guo. 3D PIV measurements of rotorstator interactions in doubleblade centrifugal pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(4): 384-389.
[2] ZHU Rong-Sheng, LI Xiao-Long, YUAN Shou-Qi, ZHENG Bao-Yi, FU Qiang. Collector discharge pressure fluctuation of 1 000 MW nuclear reactor coolant pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(4): 395-400.
[3] YE Xiao-Yan, TIAN Ying-Ying, DING Ya-Na, SHEN Liang-Bin, ZHU Li-Kai. Numerical simulation of twophase flow in high shear pulp pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(4): 407-411.
[4] ZHANG Ren-Hui, ZHENG Kai, YANG Jun-Hu, LI Ren-Nian. Parametric design of centrifugal pump impellers[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(4): 417-421.
[5] YUAN Shou-Qi, Ye-Li-Ting, Zhang-Jin-Feng, Yuan-Ye, Zhang-Wei-Jie. Influence of splitter blades on unsteady flow characteristics in centrifugal pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(4): 373-378.
[6] Cheng-Li, LIU Chao, B.P.M.van Esch, TANG Fang-Ping, JIN Yan, ZHOU Ji-Ren. Flow pattern and hydraulic performance of tubular pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(4): 436-441.
[7] . Numerical calculation of whole and non whole flow field in centrifugal pumps[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(3): 274-278.
[8] . Static analysis on rotor of type ZJ-200-25 screw centrifugal pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(3): 254-259.
[9] LI Shu-Xun, XU Deng-Wei, LI Que, WANG Chao-Fu. Design and numerical simulation of inverted bucket pilot operated steam traps[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(3): 346-350.
[10] Shi-Wei-Dong, ZHANG Lei, CHEN Bin, JIANG Ting, ZHANG Hua. Influence of gap on pressure pulsation and radial force of centrifugal pumps[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(3): 260-264.
[11] . Variable pitch profile equation of screw centrifugal pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(3): 289-294.
[12] . Analysis on  effect of splitter geometrical parameters on performance of centrifugal pump using grey theory[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(3): 295-299.
[13] BING Hao, CAO Shu-Liang, TAN Lei, LU Li. Effects of diffuser vane on mixedflow pumps performance[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(2): 125-130.
[14] TAN Ming-Gao, WANG Yong, LIU Hou-Lin, WU Xian-Fang, WANG Kai. Effects of number of blades on flow induced vibrationand noise of centrifugal pumps[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(2): 131-135.
[15] CHANG Shu-Ping, WANG Yong-Sheng. Cavitation performance research of mixedflow pump based on CFD[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(2): 171-175.

Copyright © 2011 Journal of Drainage and Irrigation Machinery Engineering
Support by Beijing Magtech Co.Ltd   E-mail: support@magtech.com.cn