Numerical analysis on transient regime of screw-type centrifugal pump

doi:10.3901/JME.2013.08.186

	Numerical analysis on transient regime of screw-type centrifugal pump
	Cheng, Xiaorui; Li, Rennian; Li, Yibin; Gao, Yang; Shen, Lixin
刊名	Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
	2013-04-20
卷号	49 期号:8 页码:186-192
关键词	Axial flow Centrifugal pumps Navier Stokes equations Numerical analysis Screws Transient analysis Turbulence models Design condition Monitoring points Multiple-reference frames Numerical investigations Pressure fluctuation Screw centrifugal pumps Screw type centrifugal pump Transient regime
ISSN号	05776686
DOI	10.3901/JME.2013.08.186
英文摘要	A three-dimensional unsteady numerical investigation is carried out in a screw centrifugal pump to study axial force, impeller radial force and pressure fluctuation rule of different instantaneous and conditions on monitoring points based on Reynolds Navier-Stokes in multiple reference frames and the RNG k-Ε turbulence model. The results obtained show that the error is less than 2.5% to predict efficiency and head using unsteady and unsteady numerical model. The pressure fluctuations on the monitoring points have obvious periodic in the case, and the pressure of P3 has a severe fluctuations, and appear two times the pressure fluctuation. The pressure fluctuations of P2 near volute tongue is severe with the flow rate from low to high, and the pressure fluctuations range increase four times when flow rate increase a time. The monitoring point pressure fluctuation on the suction surface and pressure surface of blade inlet have obvious periodic, and pressure fluctuations on the suction surface are more than pressure surface. With the flow rate increasing, the pressure fluctuations increase obviously, and with flow rate changing, the pressure fluctuations are greater influence on the surfaces of blade inlet than blade outlet. The direction of the radial force is periodic changes, meanwhile as flow rate from high to low, the direction moves near to the volute tongue gradually. With the reduction of flow rate, the fluctuations range of radial force increase, but there is large radical force in design condition. Axial force has fluctuation but its range is very small, and with the value of head decreasing, the axial forces reduce in a nonlinear. © 2013 Journal of Mechanical Engineering.
语种	中文
出版者	Editorial Office of Chinese Journal of Mechanical Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113213]
专题	能源与动力工程学院新能源学院
作者单位	School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Cheng, Xiaorui,Li, Rennian,Li, Yibin,et al. Numerical analysis on transient regime of screw-type centrifugal pump[J]. Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,2013,49(8):186-192.
APA	Cheng, Xiaorui,Li, Rennian,Li, Yibin,Gao, Yang,&Shen, Lixin.(2013).Numerical analysis on transient regime of screw-type centrifugal pump.Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,49(8),186-192.
MLA	Cheng, Xiaorui,et al."Numerical analysis on transient regime of screw-type centrifugal pump".Jixie Gongcheng Xuebao/Journal of Mechanical Engineering 49.8(2013):186-192.