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, Yibin 2; Guo, Dongsheng 2; Tang, Yonglin 1; Du, Jun 2
刊名	Zhendong yu Chongji/Journal of Vibration and Shock
	2020-05-15
卷号	39 期号:9 页码:194-200 and 220
关键词	Characteristic curve Experimental test Flow charac-teristics Numerical calculation Outlet pressures Performance parameters Rotary lobe pumps Rotational speed
ISSN号	10003835
DOI	10.13465/j.cnki.jvs.2020.09.027
英文摘要	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.
语种	中文
出版者	Chinese Vibration Engineering Society
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115301]
专题	能源与动力工程学院
作者单位	1.Guangdong Mechanical and Electronical college of Technology, Guangzhou; 510515, China 2.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China;
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.