Analysis on the effect of variable guide vane numbers on the performance of pump as turbine

doi:10.1177/1687814018780796

	Analysis on the effect of variable guide vane numbers on the performance of pump as turbine
	Shi, FengXia; Yang, JunHu; Wang, XiaoHui
刊名	ADVANCES IN MECHANICAL ENGINEERING
	2018-06-10
卷号	10 期号:6
关键词	Pump as turbine guide vane numbers turbulent kinetic energy radial force power losses
ISSN号	1687-8140
DOI	10.1177/1687814018780796
英文摘要	To study the effects of different guide vane numbers on the unsteady performance of pump as turbine based on the Navier-Stokes equation and standard k-epsilon turbulence model, computation fluid dynamics technology was used to simulate the flow field in pump as turbine. The turbulent kinetic energy, unsteady radial forces, and power losses were also clarified. The results show that for turbines with a guide vane, the distribution of turbulent kinetic energy is more uniform than before, and the radial force vector distribution is more symmetrical within four quadrants. The time-domain distribution of radial force is more periodic, the number of fluctuation periods is equal to the guide vane numbers, and the dominant frequency of the radial force is equal to the blade frequency. For different guide vane numbers, the effects on the unsteady performance of pump as turbine are different. When the guide vane number is equal to 9, the distribution of turbulence kinetic energy is optimal. In addition, at an optimal flow rate, both the time domains of the radial force and the power losses of the impeller are minimal, so to the geometric parameters of the hydraulic turbine are definite, the optimal guide vane number exists.
资助项目	National Natural Science Fund Project of China[51569013]
WOS研究方向	Thermodynamics ; Engineering
语种	英语
出版者	SAGE PUBLICATIONS LTD
WOS记录号	WOS:000434996600001
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32603]
专题	能源与动力工程学院
通讯作者	Yang, JunHu
作者单位	Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Shi, FengXia,Yang, JunHu,Wang, XiaoHui. Analysis on the effect of variable guide vane numbers on the performance of pump as turbine[J]. ADVANCES IN MECHANICAL ENGINEERING,2018,10(6).
APA	Shi, FengXia,Yang, JunHu,&Wang, XiaoHui.(2018).Analysis on the effect of variable guide vane numbers on the performance of pump as turbine.ADVANCES IN MECHANICAL ENGINEERING,10(6).
MLA	Shi, FengXia,et al."Analysis on the effect of variable guide vane numbers on the performance of pump as turbine".ADVANCES IN MECHANICAL ENGINEERING 10.6(2018).