Numerical analysis on the rapid starting period in a screw-type centrifugal pump

doi:10.4028/www.scientific.net/AMM.444-445.244

CORC > 兰州理工大学 > 兰州理工大学

	Numerical analysis on the rapid starting period in a screw-type centrifugal pump
	Cheng, Xiao Rui 1; Li, Ren Nian 1; Guo, Wei Li 2; Zhang, Nan 1; Gao, Yang 1
	2014
会议日期	July 17, 2013 - July 19, 2013
会议地点	Kunming, China
关键词	Centrifugal pumps Computational fluid dynamics Computer simulation Impellers Navier Stokes equations Transition flow Automatic updates Global performance Screw-type centrifugal pumps Sliding mesh technique Starting periods Steady-state values Three-dimensional unsteady flow Transient flow
卷号	444-445
DOI	10.4028/www.scientific.net/AMM.444-445.244
页码	244-252
英文摘要	Computational fluid dynamics were used to study the three-dimensional unsteady flows in a closed pipeline system with a screw-type centrifugal pump during rapid starting period. The unsteady Reynold time-averaged Navier-Stokes equations, RNG k -Ε have been used to solve the unsteady, incompressible, viscous turbulent effects. The sliding mesh technique is proposed to resolve the transient flows caused by the started impeller. Combined with the characteristics of the motor, the screw-type centrifugal pump was started by two different way of linear and exponential acceleration. The automatic update of the rotational speed variation of field around the impeller was realized by FLUENT UDF. The transient variation of the pressure at the pump inlet and outlet, the global performance characteristics and the transient flow evolutions were obtained under different start-up modes. The results show that the rapid starting period presents obvious transient effect; the transient head, power curves changing with time reveal the transient attachment head and additional power part. Compared with the linear mode, the transient flow, shaft power, efficiency tend to a steady state value within a relatively short period in setting start time and maintain a quasi-periodic fluctuations. © (2014) Trans Tech Publications, Switzerland.
会议录	Applied Mechanics and Materials
会议录出版者	Trans Tech Publications Ltd, Kreuzstrasse 10, Zurich-Durnten, CH-8635, Switzerland
语种	英语
ISSN号	16609336
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117695]
专题	兰州理工大学能源与动力工程学院新能源学院
作者单位	1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China; 2.Sino Truck Jinan Power Division, Jinan 250200, China
推荐引用方式 GB/T 7714	Cheng, Xiao Rui,Li, Ren Nian,Guo, Wei Li,et al. Numerical analysis on the rapid starting period in a screw-type centrifugal pump[C]. 见:. Kunming, China. July 17, 2013 - July 19, 2013.