Influence of jetting suction chamber on performance of centrifugal pumps

被引：0
|
作者：
Mou J. [1 ]
Wang R. [1 ]
Gu Y. [1 ]
Zheng S. [1 ]
Liu F. [1 ]
Wang Y. [1 ]
机构：
[1] School of Mechanical Engineering, Zhejiang University of Technology, Hangzhou
来源：
Gu, Yunqing (guyunqing@zjut.edu.cn) | 1600年 / Central South University of Technology卷 / 47期
基金：
中国国家自然科学基金;
关键词：
Cavitation; Centrifugal pump; Ejector; Numerical simulation;
D O I：
10.11817/j.issn.1672-7207.2016.03.007
中图分类号：
学科分类号：
摘要：
Taking IS100-80-160 centrifugal pump as a model-carrier, a jetting suction chamber centrifugal pump was proposed. Based on RNG k-ε turbulence model, a numerical simulation was performed for studying the internal flow under the condition of different ejector parameters, and for revealing the comprehensive influence of ejector port diameter and ejector angle on the performance of centrifugal pumps. Then the experiment was conducted to verify the correctness of numerical simulation. The results show that under the designed condition, the net positive suction head decreases first and then increases with the increase of ejector port diameter, and the head and efficiency are incremental slightly. Pressurizing effect of jetting suction chamber and centrifugal pump cavitation performance are best when the ejector port diameter is 3 mm. With the increase of ejector angle, the net positive suction head increases gradually, and the head and efficiency decrease slightly. The optimum range of ejector angle is 15°-30°. The changing trend of experimental results is consistent with numerical simulation results, which indicates the accuracy of the numerical simulation. © 2016, Central South University of Technology. All right reserved.
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页码：755 / 762
页数：7
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