Investigation on the power loss and radial force characteristics of pump as turbine under gas-liquid two-phase condition

doi:10.1177/1687814019843732

	Investigation on the power loss and radial force characteristics of pump as turbine under gas-liquid two-phase condition
	Shi Fengxia 2,3; Yang Junhu 2,3; Miao Senchun 1,2,3; Wang Xiaohui 2,3
刊名	ADVANCES IN MECHANICAL ENGINEERING
	2019-04-23
卷号	11 期号:4
关键词	Pump as turbine velocity distribution power loss radial force numerical calculation
ISSN号	1687-8132
DOI	10.1177/1687814019843732
英文摘要	To study the power loss and radial force characteristics of pump as hydraulic turbine (PAT) under gas-liquid two-phase condition, a single-stage centrifugal pump in reverse mode as turbine was adopted. Based on the Navier-Stokes equation and standard k-epsilon turbulence model, CFD (computational fluid dynamics) technology was used to simulate the flow field in hydraulic turbine. The results show that the gas content has a serious effect on the hydraulic turbine performance. Under the gas-liquid two-phase condition, the fluid velocity distribution in turbine is uneven, and the power loss is not uniform enough when the gas content is less than 0.1. The radial force vector distribution all closed to ellipse shape for different gas content and flow rates, but near the volume tongue an obvious wave appeared. The more the flow rate is, the larger the radial force is. The radial force does not change as regular as that of pure liquid condition, serious fluctuation appeared. For different gas contents, the dominant frequency always equals the rotating frequency of impeller, and subordinate dominant frequency does not appear. Under low gas content and high flow rate, both the fluctuation amplitude and dominant frequency are the maximal.
资助项目	National Natural Science Fund Project of China[51569013] ; Key Laboratory of Fluid machinery and Systems, Gansu Province[901709] ; Gansu province science and Technology Fund[17JR5RA110] ; Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University[szjj2017-091] ; Doctoral fund of LanZhou University of Technology[061802]
WOS研究方向	Thermodynamics ; Engineering
语种	英语
出版者	SAGE PUBLICATIONS LTD
WOS记录号	WOS:000465600500001
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31940]
专题	能源与动力工程学院
通讯作者	Shi Fengxia
作者单位	1.Xihua Univ, Key Lab Fluid & Power Machinery, Minist Educ, Chengdu, Sichuan, Peoples R China 2.Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China 3.Lanzhou Univ Technol, Key Lab Fluid Machinery & Syst, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Shi Fengxia,Yang Junhu,Miao Senchun,et al. Investigation on the power loss and radial force characteristics of pump as turbine under gas-liquid two-phase condition[J]. ADVANCES IN MECHANICAL ENGINEERING,2019,11(4).
APA	Shi Fengxia,Yang Junhu,Miao Senchun,&Wang Xiaohui.(2019).Investigation on the power loss and radial force characteristics of pump as turbine under gas-liquid two-phase condition.ADVANCES IN MECHANICAL ENGINEERING,11(4).
MLA	Shi Fengxia,et al."Investigation on the power loss and radial force characteristics of pump as turbine under gas-liquid two-phase condition".ADVANCES IN MECHANICAL ENGINEERING 11.4(2019).