Effect of inducer sweepback on cavitation performance of centrifugal pump

doi:10.1088/1755-1315/163/1/012107

	Effect of inducer sweepback on cavitation performance of centrifugal pump
	Cheng, X.R.1,2; Liu, H.1; Tu, Y.X.1; Wei, Y.Q.1; Zhang, S.Y.1
	2018-07-30
会议日期	November 16, 2017 - November 19, 2017
会议地点	Beijing, China
关键词	Efficiency Hydraulic machinery Hypersonic aerodynamics Navier Stokes equations Pumps Rhenium compounds Cavitation bubble Cavitation model Cavitation performance Flow charac-teristics Pressure surface Suction surfaces Three-dimensional numerical calculations Turbulent models
卷号	163
期号	1
DOI	10.1088/1755-1315/163/1/012107
英文摘要	In order to study the effects of sweepback of inducer on cavitation performance of pump, based onthe experimental results, the Reynolds N-S equation, RNG k- turbulent model and Schnerr&Sauer cavitation model, a three-dimensional numerical calculation is employed to study the flow characteristics of one certain LNG pump. Laws of the variation of cavitation performance, head and efficiency with the change of sweepback are studied. The numerical analysis of the eight inducer projects with sweepback angle from 120° to 290° is carried out. The results show that the cavitation bubbles appear at the suction surface near the inlet side at first. With the decrease of NPSHa, the bubbles spread to the outlet side of the inducer and the pressure surface, finally they fill the entire channel. When the inducer sweepback angle increases from 120° to 270°, NPSHr of the pump reduces gradually. That means the anti-cavitation performance of the pump has been improved. However, NPSHr of the pump raises gradually when the inducer sweepback angle increases from 270° to 290°. The efficiency and head of pump tend to be stable within the larger range near the optimal sweepback. © Published under licence by IOP Publishing Ltd.
会议录	IOP Conference Series: Earth and Environmental Science
会议录出版者	Institute of Physics Publishing
语种	英语
ISSN号	17551307
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/118094]
专题	能源与动力工程学院机电工程学院
作者单位	1.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Fluid Machinery and Systems of Gansu Province, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Cheng, X.R.,Liu, H.,Tu, Y.X.,et al. Effect of inducer sweepback on cavitation performance of centrifugal pump[C]. 见:. Beijing, China. November 16, 2017 - November 19, 2017.