Numerical analysis of pressure pulsation characteristics of diagonal flow pump in adjacent area of tip clearance

doi:10.13243/j.cnki.slxb.2015.04.014

CORC > 兰州理工大学 > 兰州理工大学 > 新能源学院

	Numerical analysis of pressure pulsation characteristics of diagonal flow pump in adjacent area of tip clearance
	Li, Yibin 2,3; Bi, Zhen 2; Li, Rennian 2,3; Hu, Penglin 2; Zhou, Dong 1
刊名	Shuili Xuebao/Journal of Hydraulic Engineering
	2015-04-01
卷号	46 期号:4 页码:497-504
关键词	Impellers Large eddy simulation Numerical analysis Spectrum analysis Blade tip clearance Block structured High frequency HF Hydraulic performance Near-wall region Pressure pulsation SIMPLEC algorithm Unsteady numerical simulations
ISSN号	05599350
DOI	10.13243/j.cnki.slxb.2015.04.014
英文摘要	In order to clarify pressure pulsation characteristics of the diagonal flow pump in adjacent areas of tip clearance under small flow conditions, and reveal the effect of different blade tip clearance value RTC on transient stability, an unsteady numerical simulation was conducted for the diagonal flow pumps. Four plans of diagonal flow pumps were selected with different RTC values of 0, 0.5, 0.75 and 1mm as study objects, based on the large eddy simulation (LES) approach, SIMPLEC algorithm and block structured grids. By analyzing pressure pulsation spectrum, the internal relation between RTC and pressure pulsation of adjacent areas of tip clearance has been realized. The results show that the leakage flow caused by RTC mixing with main flow aggravates the instability of the flow on tip clearance areas, reducing the performance ability of impeller blades; the greater RTC can reduce high frequency pressure pulsation of blade tip areas, but give rise to leakage rate aggravation; with RTC increasing, the average value of pressure pulsation on impeller near wall regions decreases gradually, and hydraulic performance declines. Choose a proper small RTC at design time can improve overall hydraulic performance of diagonal flow pumps. ©, 2015, China Water Power Press. All right reserved.
语种	中文
出版者	China Water Power Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113561]
专题	新能源学院兰州理工大学能源与动力工程学院
作者单位	1.Hunan XEMG Changsha Pump Works Co., L T D., Changsha; 410205, China 2.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 3.Key Laboratory of Fluid Machinery and Systems, Lanzhou; Gansu Province; 730050, China;
推荐引用方式 GB/T 7714	Li, Yibin,Bi, Zhen,Li, Rennian,et al. Numerical analysis of pressure pulsation characteristics of diagonal flow pump in adjacent area of tip clearance[J]. Shuili Xuebao/Journal of Hydraulic Engineering,2015,46(4):497-504.
APA	Li, Yibin,Bi, Zhen,Li, Rennian,Hu, Penglin,&Zhou, Dong.(2015).Numerical analysis of pressure pulsation characteristics of diagonal flow pump in adjacent area of tip clearance.Shuili Xuebao/Journal of Hydraulic Engineering,46(4),497-504.
MLA	Li, Yibin,et al."Numerical analysis of pressure pulsation characteristics of diagonal flow pump in adjacent area of tip clearance".Shuili Xuebao/Journal of Hydraulic Engineering 46.4(2015):497-504.