Effects of viscosity on transient behavior of a low specific speed centrifugal pump in starting and stopping periods

doi:10.1615/InterJFluidMechRes.2017018920

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	Effects of viscosity on transient behavior of a low specific speed centrifugal pump in starting and stopping periods
	Zhang, Yu-Liang 1; Zhu, Zu-Chao 2; Li, Wen-Guang 3; Xiao, Jun-Jian 1
刊名	International Journal of Fluid Mechanics Research
	2018
卷号	45 期号:1 页码:1-20
关键词	Centrifugal pumps Computational fluid dynamics Liquids Petroleum transportation Viscosity Hysteresis phenomenon Low specific speed Low specific speed centrifugal pump Operational reliability Performance parameters Starting process Transient performance Transient turbulent flow
ISSN号	10642277
DOI	10.1615/InterJFluidMechRes.2017018920
英文摘要	Low specific speed centrifugal pumps have been extensively applied in petroleum, petro-chemical, and other industrial sectors to transport liquids in a variety of viscosity. Their transient performance during starting and stopping processes can be important for their operational reliability; however, this performance has not been tackled under pumping highly viscous oils conditions so far. In the article, the transient turbulent flows in a low specific speed centrifugal pump are simulated with CFD code in starting and stopping periods for three liquids. The effects of viscosity on instant performance parameters, head-flow rate curves, instant internal flow variables, and flow structures in the impeller and volute are demonstrated. The parameter synchronization characteristic, hysteresis phenomenon in head-flow rate curves, and pump affinity law modification are addressed. It is turn out that a highly viscous liquid can respond to the pump speed change more quick than water, but is subject to a more significant overshoot in the shaft-power curve; thus, a liquid with higher viscosity than water potentially can reduce the operational reliability of a low specific speed centrifugal pump during the starting period. © 2018 by Begell House, Inc.
WOS研究方向	Mechanics
语种	英语
出版者	Begell House Inc.
WOS记录号	WOS:000432844800001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114578]
专题	兰州理工大学
作者单位	1.College of Mechanical Engineering, Quzhou University, Quzhou; 324000, China; 2.Zhejiang Provincial Key Lab of Fluid Transmission Technology, Zhejiang Sci-Tech University, Hangzhou; 310018, China; 3.Department of Fluid Machinery, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zhang, Yu-Liang,Zhu, Zu-Chao,Li, Wen-Guang,et al. Effects of viscosity on transient behavior of a low specific speed centrifugal pump in starting and stopping periods[J]. International Journal of Fluid Mechanics Research,2018,45(1):1-20.
APA	Zhang, Yu-Liang,Zhu, Zu-Chao,Li, Wen-Guang,&Xiao, Jun-Jian.(2018).Effects of viscosity on transient behavior of a low specific speed centrifugal pump in starting and stopping periods.International Journal of Fluid Mechanics Research,45(1),1-20.
MLA	Zhang, Yu-Liang,et al."Effects of viscosity on transient behavior of a low specific speed centrifugal pump in starting and stopping periods".International Journal of Fluid Mechanics Research 45.1(2018):1-20.