Numerical Study on the Aerodynamic Performance of Multi-Blade Rotor Cavity in the Gas Circulating Pump of Fuel Cell

doi:10.7652/xjtuxb202103006

	Numerical Study on the Aerodynamic Performance of Multi-Blade Rotor Cavity in the Gas Circulating Pump of Fuel Cell
	Li, Yibin 1; Li, Long 1; Liu, Jianfeng 2; Yang, Yuemin 1; Feng, Dewei 1
刊名	Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
	2021-03-10
卷号	55 期号:3 页码:46-56
关键词	Aerodynamics Fuel cells Mathematical transformations Turbulence models Well pumps Aero-dynamic performance Aerodynamic characteristics Coordinate transformation methods Internal pressurization Mathematical analysis Symmetry principles Unsteady numerical simulations Volumetric efficiency
ISSN号	0253-987X
DOI	10.7652/xjtuxb202103006
英文摘要	In order to study the quantitative relationships of the rotor clearance and the number of rotor blades with the aerodynamic characteristic curve of the cam-type gas circulating pump, and to obtain the distribution rule of the radial excitation force of the rotor with different blade numbers, based on the symmetry principle, the arc involute arc rotor profile equations of 3 to 6 blades rotor are derived by using mathematical analysis method and coordinate transformation method, with five different rotor clearances selected to study. Based on dynamic mesh technology and RNG k-Ε turbulence model, three-dimensional unsteady numerical simulation on the rotors with different blade numbers and clearances are performed. The influences of rotor clearance and number of blades on the flow rate/pressure characteristics and excitation force of gas circulating pump are revealed and verified by experiments. The results show that with the increase of rotor clearance from 0.1 mm to 0.3 mm, the average flow rate and volumetric efficiency of the rotor outlet with different blade numbers show a downward trend, and the three-blade rotor has the largest decline, decreased 0.009 4 kg•s-1 and 28.6% respectively. The three-blade and four-blade rotors have the lowest flow pulsation intensity when the clearance is 0.15 mm; and the five-blade and six-blade rotors have the lowest flow pulsation intensity when the clearance is 0.25 mm. The average flow rate and the average total pressure at the outlet are inversely proportional to the number of rotor blades. With the increase of the number of blades, the pressure distribution in the rotor cavity is improved, and the internal pressurization process is more stable. As the number of blades increases, the pulsation amplitude and intensity of the rotor radial excitation force component Fx are significantly reduced, but the influence of the number of blades on the rotor radial excitation force component Fy is not significant. © 2021, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.
语种	中文
出版者	Xi'an Jiaotong University
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148408]
专题	能源与动力工程学院
作者单位	1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Beijing Satellite Manufacturer Co., Ltd., Beijing; 100094, China
推荐引用方式 GB/T 7714	Li, Yibin,Li, Long,Liu, Jianfeng,et al. Numerical Study on the Aerodynamic Performance of Multi-Blade Rotor Cavity in the Gas Circulating Pump of Fuel Cell[J]. Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University,2021,55(3):46-56.
APA	Li, Yibin,Li, Long,Liu, Jianfeng,Yang, Yuemin,&Feng, Dewei.(2021).Numerical Study on the Aerodynamic Performance of Multi-Blade Rotor Cavity in the Gas Circulating Pump of Fuel Cell.Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University,55(3),46-56.
MLA	Li, Yibin,et al."Numerical Study on the Aerodynamic Performance of Multi-Blade Rotor Cavity in the Gas Circulating Pump of Fuel Cell".Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University 55.3(2021):46-56.