Studying on the influence of the annular groove position on the cavitation performance of high-speed inducer

doi:10.1007/s40430-021-03024-2

	Studying on the influence of the annular groove position on the cavitation performance of high-speed inducer
	Cheng, Xiaorui 1,2; Yang, Dengfeng 1; Lu, Xinggang 1
刊名	JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
	2021-07
卷号	43 期号:7
关键词	High-speed inducer Annular groove Axial position Cavitation performance
ISSN号	1678-5878
DOI	10.1007/s40430-021-03024-2
英文摘要	To suppress the cavitation instability caused by the leakage vortex at the tip clearance of the high-speed inducer, this study establishes a structure (i.e., annular groove) at the upstream boundary of the high-speed inducer that can absorb the leakage vortex, and 6 sets of design projects are determined, including the initial plan and the axial distance of 0 mm, 2.5 mm, 5 mm, 7.5 mm, and 10 mm, respectively. The effects of annular grooves on cavitation performance under different schemes are studied through a combination of experiment and numerical calculation. The results show that cavitation tends to occur at the position where the leading edge of the suction surface of the inducer intersects the shroud and the bubbles volume is distributed in gradient. Vortex belt is formed at the inlet of the inducer. The axial position of the annular groove relative to the inducer is an important parameter suppressing the occurrence of clearance leakage vortex cavitation, asymmetric vortex cavitation and rotating vortex cavitation. In the proper position, annular groove can significantly suppress the bubbles incipient and improve the cavitation performance of the inducer. It can improve the head of the centrifugal pump effectively under the condition of little effect on centrifugal pump efficiency. However, at other positions, the annular groove cannot improve the cavitation performance of the centrifugal pump, indicating the annular groove has an axial optimal position in inhibiting cavitation and improving cavitation performance of the inducer, at this time L1=0 mm.
WOS研究方向	Engineering
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000691416500001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148723]
专题	能源与动力工程学院
作者单位	1.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Peoples R China; 2.Key Lab Fluid Machinery & Syst Gansu Prov, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Xiaorui,Yang, Dengfeng,Lu, Xinggang. Studying on the influence of the annular groove position on the cavitation performance of high-speed inducer[J]. JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING,2021,43(7).
APA	Cheng, Xiaorui,Yang, Dengfeng,&Lu, Xinggang.(2021).Studying on the influence of the annular groove position on the cavitation performance of high-speed inducer.JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING,43(7).
MLA	Cheng, Xiaorui,et al."Studying on the influence of the annular groove position on the cavitation performance of high-speed inducer".JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING 43.7(2021).