NDLI: Numerical Analysis of Shaft Tubular Pumping Systems

Content Provider	IEEE Xplore Digital Library
Author	Honggeng Zhu Rentian Zhang Linbi Yao Jun Wei
Copyright Year	2011
Abstract	In order to supply better flow conditions for pump and improve pumping system efficiency, numerical simulations were conducted in this paper on 3 design schemes of a shaft tubular pumping system to compare their energy performances and investigate the relationship between the design scheme and the system characteristics. With the same design of suction box and discharge passage, the head losses of the outlet discharge passage and the pumping system efficiencies were compared between 2 design schemes of different size and shape of the shaft (pit). The flow conditions of pump, in terms of distribution uniformity of axial velocity and velocity-weighted bias angle of outflow field in the outlet cross-section of suction box, and the pumping system efficiencies were compared between the front and rear arrangement of the shaft while keeping the shaft and the pump unchanged. The computational results show that for the rear arrangement of shaft schemes the size and shape of the shaft affect not only the head loss of the discharge passage but also the pumping system efficiency. If just simply turning the pump around 180 degrees without changing pump and flow passages, the pumping system can be operated both in the rear arrangement scheme of shaft and front arrangement scheme. However, the flow conditions of pump become deteriorated in terms of distribution uniformity and bias angle when the rear arrangement scheme of shaft changed to front arrangement. As a result, the hydraulic losses of suction box and discharge passage in front arrangement increases, the best efficiency point drops and high efficiency zone moves toward smaller flow rates.
Starting Page	491
Ending Page	495
File Size	361543
Page Count	5
File Format	PDF
ISBN	9781612842783
DOI	10.1109/CDCIEM.2011.388
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-02-19
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Shafts Flow condition Irrigation Shape Shaft tubular pumping system Numerical analysis Discharges Impellers Energy performance Mathematical model Optimization
Content Type	Text
Resource Type	Article

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