Numerical calculation and analysis of cavitation flow in rotary lobe pump

	Numerical calculation and analysis of cavitation flow in rotary lobe pump
	Jiang, Xiaoqin 1; Li, Yibin 2; Guo, Dongsheng 2; Du, Jun 2
刊名	IPPTA: Quarterly Journal of Indian Pulp and Paper Technical Association
	2018-06-01
卷号	30 期号:2 页码:166-175
关键词	Mesh generation Pumps Rotors Turbulence models Dynamic mesh Incipient cavitation Instantaneous flow Internal cavitation NPSH Numerical calculation Rotary lobe pumps Transition regions
ISSN号	03795462
英文摘要	In order to study the cavitation flow in rotary lobe pump. Based on the dynamic mesh of Fluent, RNG k- turbulence model and Zwart-Gerber-Belamri cavitation model to simulate a three-cycloid rotary lobe pump with unsteady method. To simulate the instantaneous flow field distribution and analysis its internal cavitation of rotary lobe pump. At the same time, the cavitation and non-cavitation flow in the rotor pump were compared and analyzed. We also gave the judgment of incipient cavitation. And the same time the cavitation area and the inlet pressure of the rotary lobe pump are determined under the conditions of incipient cavitation, critical cavitation, developing cavitation and complete cavitation. The results show that the bubble occurs firstly in the rotor meshing of the suction cavity, and with the rotation of the rotor, the cavitation is brought into the adjacent transition region, thus forming the attached cavitation bubble. Then the bubble is gradually out of mainstream and occupies the whole suction cavity, thus blocking part of the flow passage, and finally occupying the whole passage, cause the rotary lobe pump not to work properly. The calculated that the critical NPSH of the pump is 3.59m and the critical cavitation point flow rate is 20.85m3/h, which is in good agreement with the experimental data. © 2018 Indian Pulp and Paper Technical Association. All rights reserved.
语种	英语
出版者	Indian Pulp and Paper Technical Association
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114508]
专题	能源与动力工程学院
作者单位	1.Department of Automotive Engineering, Sichuan Vocational and Technical, College of Communications, China; 2.College of Energy and Power Engineering, Lanzhou University of Technology, China
推荐引用方式 GB/T 7714	Jiang, Xiaoqin,Li, Yibin,Guo, Dongsheng,et al. Numerical calculation and analysis of cavitation flow in rotary lobe pump[J]. IPPTA: Quarterly Journal of Indian Pulp and Paper Technical Association,2018,30(2):166-175.
APA	Jiang, Xiaoqin,Li, Yibin,Guo, Dongsheng,&Du, Jun.(2018).Numerical calculation and analysis of cavitation flow in rotary lobe pump.IPPTA: Quarterly Journal of Indian Pulp and Paper Technical Association,30(2),166-175.
MLA	Jiang, Xiaoqin,et al."Numerical calculation and analysis of cavitation flow in rotary lobe pump".IPPTA: Quarterly Journal of Indian Pulp and Paper Technical Association 30.2(2018):166-175.