Effect of inlet sweepback angle on the cavitation performance of an inducer

doi:10.1080/19942060.2019.1640134

	Effect of inlet sweepback angle on the cavitation performance of an inducer
	Cheng, Xiaorui 1,2; Li, Yibin 1; Zhang, Shuyan 1
刊名	ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS
	2019-01
卷号	13 期号:1 页码:713-723
关键词	Inducer sweepback angle cavitation simulation
ISSN号	1994-2060
DOI	10.1080/19942060.2019.1640134
英文摘要	In order to study the effects of inlet sweepback angle on the cavitation performance of inducers based on the Reynolds N-S equation, RNG k-epsilon turbulent model, and Schnerr and Sauer cavitation model, a three-dimensional numerical calculation is employed to study the flow characteristics of a certain LNG pump. Laws of the variation of cavitation performance, head, and efficiency with the change of sweepback were studied. Numerical analysis of the eight inducer projects with a sweepback angle from 120 degrees to 290 degrees was carried out. The results show that the cavitation bubbles first appear at the suction surface near the inlet side. With the decrease of net positive suction head (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 degrees to 270 degrees, the NPSHr of the pump reduces gradually, that is to say that the anti-cavitation performance of the pump has been improved. However, the NPSHr of the pump increases gradually when the inducer sweepback angle increases from 270 degrees to 290 degrees. In other words, there is an optimal sweepback from 120 degrees to 290 degrees, and efficiency and head of pump tend to be stable near the optimal sweepback.
资助项目	National Natural Science Foundation of China[51469013][51369015]
WOS研究方向	Engineering ; Mechanics
语种	英语
出版者	HONG KONG POLYTECHNIC UNIV, DEPT CIVIL & STRUCTURAL ENG
WOS记录号	WOS:000477584000001
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32230]
专题	能源与动力工程学院
通讯作者	Cheng, Xiaorui
作者单位	1.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou, Gansu, Peoples R China 2.Key Lab Fluid Machinery & Syst Gansu Prov, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Xiaorui,Li, Yibin,Zhang, Shuyan. Effect of inlet sweepback angle on the cavitation performance of an inducer[J]. ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS,2019,13(1):713-723.
APA	Cheng, Xiaorui,Li, Yibin,&Zhang, Shuyan.(2019).Effect of inlet sweepback angle on the cavitation performance of an inducer.ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS,13(1),713-723.
MLA	Cheng, Xiaorui,et al."Effect of inlet sweepback angle on the cavitation performance of an inducer".ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS 13.1(2019):713-723.