排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2018, Vol. 36 Issue (6): 467-471    DOI: 10.3969/j.issn.1674-8530.16.0116
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Simulation on performance of a centrifugal pump during rapid startup period
WU Shaoke1*, ZHANG Yuewen2, ZHANG Peng2
1.Water Transport Planning and Design Co, . Ltd., China Communications Construction Company Limited, Beijing 100007, China; 2.College of Marine Engineering, Dalian Maritime University, Dalian, Liaoning 116026, China
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Abstract To further research instantaneous characteristics in the centrifugal pump during the startup period, first, the results simulated by the software Flowmaster and the experimental results were compared, and then the situation that pump started up by different ways was simulated and analyzed. It showed that star-delta starting was in favour of the pump compared to the direct-starting. Based on this, Flowmaster was used to simulate the instantaneous starting speed, flow rate, power and outlet pressure of the centrifugal pump with the different valve openings. At last, the non-dimensional analysis was carried out. The results show that the star-delta starting belongs to the slow-start and is better than the direct-starting. In the start-up process of the centrifugal pump, flow rate characteristics are mainly determined by the motor starting characteristics and rise slowly at the beginning. The time that the flow rate reaches the stablility from zero laggs far behind the time that the rotating speed does. The dimensionless coefficient varie all the time and it can not be inconsistent with the quasi-steady state assumption.
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Articles by authors
WU Shao-Ke-*
ZHANG Yue-Wen-
ZHANG Peng-
Key wordscentrifugal pump   Flowmaster   startup   transient characteristics     
Received: 2016-05-24;
Cite this article:   
WU Shao-Ke-*,ZHANG Yue-Wen-,ZHANG Peng-. Simulation on performance of a centrifugal pump during rapid startup period[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(6): 467-471.
 
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