Study on the influence of blade outlet cutting on hydraulic noise of centrifugal pump with low specific speed

doi:10.1177/1687814020960630

	Study on the influence of blade outlet cutting on hydraulic noise of centrifugal pump with low specific speed
	Cheng, Xiaorui 1,2; Li, Tianpeng 1; Wang, Peng 1
刊名	ADVANCES IN MECHANICAL ENGINEERING
	2020-09-01
卷号	12 期号:9
关键词	Centrifugal pump impeller outlet V-shaped cutting pressure pulsation noise frequency
ISSN号	1687-8132
DOI	10.1177/1687814020960630
英文摘要	In order to study the influence of blade outlet cutting width on hydrodynamic excitation noise of the centrifugal pump with low specific speed, five schemes are used to perform V-shaped cutting on the outlet of the impeller blade are studied in this study. Based on Lighthill acoustic analogy, combining computational fluid dynamics and computational acoustics, RNGk-epsilon turbulence model is used to calculate internal unsteady flow field of the centrifugal pump, and the acoustic solution is based on the flow field calculation. The results show that the pressure pulsation can reflect the sound pressure level to a certain extent; proper cutting of the blade outlet can improve the flow state of the rear cavity of the centrifugal pump and make the flow uniform; the V-shaped cutting of the blade outlet also can reduce the dynamic and static interference between the impeller outlet and the volute tongue, effectively reducing the sound pressure level of the internal sound field, when the blade outlet cutting width isa/b(2) = 33.33%, the inlet sound pressure level and the outlet sound pressure level are decreased by 4.8% and 7.2%, respectively. In terms of internal sound field, the sound pressure level at the outlet of the pump is obviously higher than that at the inlet.
WOS研究方向	Thermodynamics ; Engineering
语种	英语
出版者	SAGE PUBLICATIONS LTD
WOS记录号	WOS:000576443600001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155112]
专题	能源与动力工程学院
作者单位	1.LanZhou Univ Technol, Coll Energy & Power Engn, Langongping Rd 287, Lanzhou 730050, Peoples R China; 2.Key Lab Fluid Machinery & Syst, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Xiaorui,Li, Tianpeng,Wang, Peng. Study on the influence of blade outlet cutting on hydraulic noise of centrifugal pump with low specific speed[J]. ADVANCES IN MECHANICAL ENGINEERING,2020,12(9).
APA	Cheng, Xiaorui,Li, Tianpeng,&Wang, Peng.(2020).Study on the influence of blade outlet cutting on hydraulic noise of centrifugal pump with low specific speed.ADVANCES IN MECHANICAL ENGINEERING,12(9).
MLA	Cheng, Xiaorui,et al."Study on the influence of blade outlet cutting on hydraulic noise of centrifugal pump with low specific speed".ADVANCES IN MECHANICAL ENGINEERING 12.9(2020).