Numerical research on viscous oil flow characteristics inside the rotor cavity of rotary lobe pump

doi:10.1007/s40430-019-1781-0

	Numerical research on viscous oil flow characteristics inside the rotor cavity of rotary lobe pump
	Li, Yi-bin 1,2; Du, Jun 1; Guo, Dong-Sheng 1
刊名	JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
	2019-07
卷号	41 期号:7
关键词	Rotary lobe pump Viscosity Flow characteristics Flow pulsation Numerical simulation
ISSN号	1678-5878
DOI	10.1007/s40430-019-1781-0
英文摘要	In order to reveal the influence of medium viscosity on flow characteristics in rotary lobe pump, the flow of five media with different viscosities, ranging from 1 (cst) to 110 (cst) has been studied in this paper. Based on the dynamic mesh model and the deformation technology of local grid reconstruction, the effects of viscosity, gap structure and speed on flow rate and pressure were investigated by transient numerical simulation, which were also verified by experiments. The results show that the viscosity has a significant influence on the performance of rotary lobe pump. With the increase in viscosity, the flow of fluid in rotor cavity tends to be steady. And the viscosity force could hinder the leakage flow of the medium in rotor cavity to some extent. The change in viscosity of the fluid medium would affect its outlet flow rate, and the outlet flow rate of 110 (cst) medium is 40% higher than that of the 1 (cst) medium. As the rotational speed is reduced from 400 (r/min) to 100 (r/min), the outlet flow rate decreases by 95% at 11 (cst) and by 80% at 72 (cst). Additionally, compared with the fixed gap structure, the gradient gap structure can effectively optimize the flow pulsation in the low-viscosity fluid, which reduces the pressure fluctuation by more than 30%.
资助项目	National Natural Science Foundation of China[51866009]
WOS研究方向	Engineering
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000470338000001
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31750]
专题	能源与动力工程学院
通讯作者	Li, Yi-bin
作者单位	1.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China 2.Key Lab Fluid Machinery & Syst, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Yi-bin,Du, Jun,Guo, Dong-Sheng. Numerical research on viscous oil flow characteristics inside the rotor cavity of rotary lobe pump[J]. JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING,2019,41(7).
APA	Li, Yi-bin,Du, Jun,&Guo, Dong-Sheng.(2019).Numerical research on viscous oil flow characteristics inside the rotor cavity of rotary lobe pump.JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING,41(7).
MLA	Li, Yi-bin,et al."Numerical research on viscous oil flow characteristics inside the rotor cavity of rotary lobe pump".JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING 41.7(2019).