Modeling Viscous Oil Cavitating Flow in a Centrifugal Pump

doi:10.1115/1.4031061

CORC > 兰州理工大学 > 兰州理工大学

	Modeling Viscous Oil Cavitating Flow in a Centrifugal Pump
	Li, Wen-Guang 1,2
刊名	JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME
	2016-01
卷号	138 期号:1
关键词	Centrifugal pumps Computational fluid dynamics Impellers Reynolds number Cavitation performance Computational fluid dynamics methods Empirical correlations Net positive suction heads Net positive-suction head required Non-condensable gas Pump head coefficient Viscous oil
ISSN号	0098-2202
DOI	10.1115/1.4031061
英文摘要	Properly modeling cavitating flow in a centrifugal pump is a very important issue for prediction of cavitation performance in pump hydraulic design optimization and application. As a first trial, the issue is explored by using computational fluid dynamics (CFD) method plus the full cavitation model herein. To secure a smoothed head-net positive suction head available (NPSHa) curve, several critical techniques are adopted. The cavitation model is validated against the experimental data in literature. The predicted net positive suction head required (NPSHr) correction factor for viscosity oils is compared with the existing measured data and empirical correlation curve, and the factor is correlated to impeller Reynolds number quantitatively. A useful relation between the pump head coefficient and vapor plus noncondensable gas-to-liquid volume ratio in the impeller is obtained. Vapor and noncondensable gas concentration profiles are illustrated in the impeller, and a "pseudocavitation" effect is confirmed as NPSHa is reduced. The effects of exit blade angle on NPSHr are presented, and the contributions of liquid viscosity and noncondensable gas concentration to the increase of NPSHr at a higher viscosity are identified.
WOS研究方向	Engineering
语种	英语
出版者	ASME
WOS记录号	WOS:000366319900011
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33836]
专题	兰州理工大学
通讯作者	Li, Wen-Guang
作者单位	1.Lanzhou Univ Technol, Dept Fluid Machinery, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, Dept Fluid Machinery, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Wen-Guang. Modeling Viscous Oil Cavitating Flow in a Centrifugal Pump[J]. JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME,2016,138(1).
APA	Li, Wen-Guang.(2016).Modeling Viscous Oil Cavitating Flow in a Centrifugal Pump.JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME,138(1).
MLA	Li, Wen-Guang."Modeling Viscous Oil Cavitating Flow in a Centrifugal Pump".JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME 138.1(2016).