The numerical simulation of unsteady flow in a mixed flow pump guide vane

doi:10.5293/IJFMS.2013.6.4.200

	The numerical simulation of unsteady flow in a mixed flow pump guide vane
	Li, Yi-Bin; Li, Ren-Nian; Wang, Xiu-Yong
刊名	International Journal of Fluid Machinery and Systems
	2014
卷号	6 期号:4 页码:200-205
关键词	Large eddy simulation Unsteady flow Vortex flow Amplitude pressure fluctuations Calculation results Guide vane Mixed flow pump Operating condition Pressure fluctuation Sub-Grid-Scale models Three-dimensional unsteady turbulences
DOI	10.5293/IJFMS.2013.6.4.200
英文摘要	In order to investigate the characteristics of unsteady flow in a mixed flow pump guide vane under the small flow conditions, several indicator points in a mixed flow pump guide vane was set, the three-dimensional unsteady turbulence numerical value of the mixed flow pump which is in the whole flow field will be calculated by means of the large eddy simulation (LES), sub-grid scale model and sliding mesh technology. The experimental results suggest that the large eddy simulation can estimate the positive slope characteristic of head & capacity curve. And the calculation results show that the pressure fluctuation coefficients of the middle section in guide vane inlet will decrease firstly and then increase. In guide vane outlet, the pressure fluctuation coefficients of section will be approximately axially symmetrical distribution. The pressure fluctuation minimum of section in guide vane inlet is above the middle location of the guide vane suction surface, and the pressure fluctuation minimum of section in which located the middle and outlet of guide vane. When it is under the small flow operating condition, the eddy scale of guide vane is larger, and the pressure fluctuation of the channel in guide vane being cyclical fluctuations obviously which leads to the area of eddy expanding to the whole channel from the suction side. The middle of the guide vane suction surface of the minimum amplitude pressure fluctuation to which the vortex core of eddy scale whose direction of fluid's rotation is the same to impeller in the guide vane adhere.
语种	英语
出版者	Turbomachinery Society of Japan
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112851]
专题	能源与动力工程学院新能源学院
作者单位	School of Energy and Power Engineering, Lanzhou University of Technology, No.287 Langongping Road, Lanzhou, 730050, China
推荐引用方式 GB/T 7714	Li, Yi-Bin,Li, Ren-Nian,Wang, Xiu-Yong. The numerical simulation of unsteady flow in a mixed flow pump guide vane[J]. International Journal of Fluid Machinery and Systems,2014,6(4):200-205.
APA	Li, Yi-Bin,Li, Ren-Nian,&Wang, Xiu-Yong.(2014).The numerical simulation of unsteady flow in a mixed flow pump guide vane.International Journal of Fluid Machinery and Systems,6(4),200-205.
MLA	Li, Yi-Bin,et al."The numerical simulation of unsteady flow in a mixed flow pump guide vane".International Journal of Fluid Machinery and Systems 6.4(2014):200-205.