NDLI: Flow numerical analysis within auxiliary-impellers of centrifugal pumps

Content Provider	IEEE Xplore Digital Library
Author	Jianping Yuan Weijie Zhang Rong Jin Shujuan Li Wei Sun
Copyright Year	2011
Description	Author affiliation: Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, 212013, China (Jianping Yuan; Weijie Zhang)
Abstract	For pumps with auxiliary impeller dynamic seals can meet the requirements of high efficiency, long life and high reliability, they are used more and more by industries to meet environmental protection and energy saving. However, the researches have yet been carried out little on the internal flow mechanism of the auxiliary impeller dynamic seals and their design optimization based on energy saving. In order to understand the detailed internal flow within the centrifugal pump with and an auxiliary impeller dynamic seal, a lot of numerical simulations were carried out by FLUENT, based on the S-A turbulent model and the time-averaged Reynolds equation. The steady simulation was designed to analyze the sealing mechanism and internal flow within an auxiliary impeller dynamic seal, and to research the effects of the auxiliary impeller dynamic seal on pump performance. The results show that an auxiliary impeller dynamic seal has influence to flow within main impeller and volute, but the influence is slight. Compared to the pump without the auxiliary impeller, the head of the centrifugal pump with an auxiliary impeller is higher while its efficiency is lower, and the difference of the head become larger while that of the efficiency becomes smaller as its flow rate increases.
Starting Page	1159
Ending Page	1163
File Size	1225898
Page Count	5
File Format	PDF
ISBN	9781424494408
e-ISBN	9781424494422
DOI	10.1109/ICIST.2011.5765176
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-03-26
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Blades Fluid dynamics Pumps Impellers Seals Numerical models
Content Type	Text
Resource Type	Article

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