Effect of the rotor diameter-length ratio on the rotary lobe pump performance based on numerical simulations and experimental tests

doi:10.13465/j.cnki.jvs.2020.09.027

	Effect of the rotor diameter-length ratio on the rotary lobe pump performance based on numerical simulations and experimental tests
	Li, Yibin1 ; Guo, Dongsheng 1; Tang, Yonglin 2; Du, Jun 1
	2020-05-15
发表期刊	Zhendong yu Chongji/Journal of Vibration and Shock
ISSN	10003835
卷号	39 期号:9 页码:194-200 and 220
摘要	The purpose of the paper is to reveal the influence of the rotor diameter-length ratio on the performance parameter of a kind of rotary lobe pump, to establish a quantitative relationship between the diameter-length ratio and the characteristic curve of the rotary lobe pump and to obtain the radial load distribution characteristics of the shaft system so as to provide a basis for the calculation of the shafting strength of the rotary lobe pump. Based on the FLUENT dynamic mesh and the RNG k-Ε turbulence model, the numerical calculation of the 3D transient flow in the rotary lobe pump was carried out. The flow characteristics of rotary lobe pumps with six different kinds of diameter-length ratio were compared, and the influence of the diameter-length ratio on the radial exciting force of the pump rotor was revealed. The results show that the diameter-length ratio has a significant influence on the performance of the rotary lobe pump. With the increase of the diameter-length ratio, the flow pulsation gradually decreases, and the outlet flow increases first and then decreases. The magnitude and direction of the radial force are changed periodically with the rotation of the rotor. The force decreases with the increase of diameter-length ratio, and increases with the increase of pump outlet pressure, which is independent of rotational speed. When the diameter-length ratio is from 0.7 to 1.3, the average volume flows at the outlet reaches the peak area, and the flow pulsation amplitude at the pump outlet is the lowest, meanwhile, the rotor's force state is better. The results provide a theoretical basis for selecting the diameter-length ratio of rotary lobe pumps. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.
关键词	Characteristic curve Experimental test Flow charac-teristics Numerical calculation Outlet pressures Performance parameters Rotary lobe pumps Rotational speed
DOI	10.13465/j.cnki.jvs.2020.09.027
收录类别	EI
语种	中文
出版者	Chinese Vibration Engineering Society
EI入藏号	20202908937817
EI主题词	Turbulence models
来源库	Compendex
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/115301
专题	能源与动力工程学院
作者单位	1.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Guangdong Mechanical and Electronical college of Technology, Guangzhou; 510515, China
第一作者单位	能源与动力工程学院
第一作者的第一单位	能源与动力工程学院
推荐引用方式 GB/T 7714	Li, Yibin,Guo, Dongsheng,Tang, Yonglin,et al. Effect of the rotor diameter-length ratio on the rotary lobe pump performance based on numerical simulations and experimental tests[J]. Zhendong yu Chongji/Journal of Vibration and Shock,2020,39(9):194-200 and 220.
APA	Li, Yibin,Guo, Dongsheng,Tang, Yonglin,&Du, Jun.(2020).Effect of the rotor diameter-length ratio on the rotary lobe pump performance based on numerical simulations and experimental tests.Zhendong yu Chongji/Journal of Vibration and Shock,39(9),194-200 and 220.
MLA	Li, Yibin,et al."Effect of the rotor diameter-length ratio on the rotary lobe pump performance based on numerical simulations and experimental tests".Zhendong yu Chongji/Journal of Vibration and Shock 39.9(2020):194-200 and 220.