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中南大学学报(英文版)

Journal of Central South University

Vol. 22    No. 8    August 2015

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Effect of pumping chamber on performance of non-overload centrifugal pump
GU Yun-qing(谷云庆)1, 2, MOU Jie-gang(牟介刚)1, 2, DAI Dong-shun(代东顺)1, 2, ZHENG Shui-hua(郑水华)1, 2, WU Deng-hao(吴登昊)2, 3, JIANG Lan-fang(蒋兰芳)2, 3, SHI Han-yu(施瀚昱)1, 2, WANG Evan4

1. College of Mechanical and Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2. Engineering Research Center of Process Equipment and Its Re-manufacturing of Ministry of Education
(Zhejiang University of Technology), Hangzhou 310014, China;
3. Zhijiang College, Zhejiang University of Technology, Hangzhou 310024, China;
4. Institut National Polytechnique of Grenoble, Joseph Fourier University, Grenoble 38031, France

Abstract:In order to specify the characteristics of un-overloaded centrifugal pumps, the IH100-65-200 pump was chosen as the model pump. Different calculation models for centrifugal pumps were established under different pumping chamber sectional parameters. In the numerical simulation of the centrifugal pumps flow field, the shaft power, head, efficiency, and the changes of the internal flow field under different sectional areas and sectional shapes were studied with the RNG k-ε turbulence model, and the influence of the pumping chamber section characteristics of the non-overloaded centrifugal pumps were analyzed. The results show that sectional areas have a significant impact on the non-overload characteristics of centrifugal pumps. The shaft power and head of centrifugal pump are increasing with a lager sectional area, by which the gradient of head curves decreases. The efficiency is improved under a large flow rate condition, but the head and the efficiency are reduced at a small flow rate. It is also observed that the sectional shapes have less influence on the shaft power, the hydraulic performance and flow field characteristics of a centrifugal pump.

 

Key words: centrifugal pumps; sectional area; sectional shape; non-overload characteristics; numerical simulation

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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