Numerical investigation of pressure fluctuation for a mixed flow pump impeller and vanes diffuser

doi:10.1088/1755-1315/15/3/032047

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	Numerical investigation of pressure fluctuation for a mixed flow pump impeller and vanes diffuser
	Li, Y. B.; Li, R. N.; Chen, X. R.; Zhao, W. G.; Shen, L. X.
	2013
卷号	15
DOI	10.1088/1755-1315/15/3/032047
英文摘要	In order to investigate the effect of rotor-stator interaction between impeller and vanes diffuser on the pressure fluctuation of a mixed flow pump, the pressure fluctuations at three representative locations under the design condition are obtained, unsteady flow feature is analyzed by RNG kappa-epsilon turbulence model with sliding mesh technology. Experimental results show that there is the positive slope of head-flow performance curve under 0.6 and 0.85 design condition, which unsteady prediction is not seen based on Reynolds-averaged equation. The pressure fluctuation is analysed by the characteristics of amplitude and frequency, the amplitude of pressure fluctuation, which the maximum is in the rim of impeller outlet and the minimum is in the hub of impeller inlet, is gradually increasing along the hub to rim, the amplitude of monitoring points located the rim of impeller inlet and impeller and vanes diffuser is two times than the hub. The amplitude of pressure fluctuation, which the maximum is in the vanes diffuser outlet, is gradually increasing along impeller inlet to vanes diffuser outlet, while there is a low-frequency pressure fluctuation caused by unsteady flow in the vanes diffuser.
会议录	26TH IAHR SYMPOSIUM ON HYDRAULIC MACHINERY AND SYSTEMS, PTS 1-7
会议录出版者	IOP PUBLISHING LTD
会议录出版地	DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
语种	英语
WOS研究方向	Energy & Fuels ; Engineering
WOS记录号	WOS:000324782300077
内容类型	会议论文
源URL	[http://119.78.100.223/handle/2XXMBERH/36967]
专题	兰州理工大学能源与动力工程学院
通讯作者	Li, Y. B.
作者单位	Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Li, Y. B.,Li, R. N.,Chen, X. R.,et al. Numerical investigation of pressure fluctuation for a mixed flow pump impeller and vanes diffuser[C]. 见:.