Analysis on pressure fluctuation of unsteady flow in deep-well centrifugal pump

被引：0
|
作者：
Zhou L. [1 ]
Shi W. [1 ]
Lu W. [1 ]
Li H. [1 ]
Pei B. [1 ]
机构：
[1] Research Center of Fluid Machinery Engineering and Technology, Jiangsu University
来源：
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | 2011年 / 27卷 / 10期
关键词：
Centrifugal pump; CFD; Numerical analysis; Pressure fluctuation; Unsteady flow;
D O I：
10.3969/j.issn.1002-6819.2011.10.008
中图分类号：
学科分类号：
摘要：
In order to analysis the pressure fluctuation of unsteady flow in the deep-well centrifugal pump, the unsteady flow field of a deep-well centrifugal pump was simulated with FLUENT software based on sliding mesh, the standard k-ε turbulence model, and the SIMPLEC arithmetic to investigate the pressure fluctuation of different locations. With the Fast Fourier Transform (FFT) analysis, the pressure fluctuation and frequency fluctuation are analyzed under rated flow conditions. The numerical results show that the grids number has obvious effect on the numerical results, and the pressure fluctuates generated between the impeller outlet and the diffuser inlet. The pressure pulsation period associated with the number of impeller blades, and blade passage frequency is the main factor of pressure fluctuation. The results can provide a basis to improve the pump body structure and further improve the pump working reliability.
引用
收藏
页码：44 / 49
页数：5
相关论文
共 15 条
  • [1] Shi W., Yuan S., Li S., Et al., Main existing problem and key technology to be solved of pump industry in China, Drainage and Irrigation Machinery, 19, 6, pp. 7-9, (2001)
  • [2] Shi W., Wang H., Yu X., Development and prospect of deep well pump in China, Drainage and Irrigation Machinery, 27, 1, pp. 64-68, (2009)
  • [3] Zobeiri A., Kueny J.L., Farhat M., Et al., Pump-turbine rotor-stator interactions in generating model: Pressure fluctuation in distributor channel, 23rd IAHR Symposium on Hydraulic Machinery and Systems, pp. 17-31, (2006)
  • [4] Arndt N., Acosta A.J., Brennen C.E., Et al., Rotor-stator interaction in diffuser pump, Journal of Turbomachinery, 111, 3, pp. 213-221, (1989)
  • [5] Tsukamoto H., Uno M., Hamafuku H., Et al., Pressure fluctuation downstream of a diffuser pump impeller, The 2nd Joint ASME/JSME Fluids Engineering Conference, 216, pp. 133-138, (1995)
  • [6] Gonzalez J., Santolaria C., Blanco E., Et al., Unsteady flow structure on a centrifugal pump: Experimental and numerical approaches, ASME 2002 Joint U.S.-European Fluids Engineering Division Conference, FEDSM2002, 257, 2 B, pp. 761-768
  • [7] Zhang M., Tsukamoto H., Unsteady hydrodynamic forces due to rotor-stator interaction on a diffuser pump with identical number of vanes on the impeller and diffuser, Journal of Fluids Engineering, 127, 4, pp. 743-751, (2005)
  • [8] Rodriguze C.G., Egusquiza E., Santos I.F., Frequencies in the vibration induced by the rotor stator interaction in a centrifugal pump turbine, Journal of Fluids Engineering, 129, 11, pp. 1428-1435, (2007)
  • [9] Chen D., Li X., Huang S., Numerical analysis of the unsteady flow field for a partial emission pump, Journal of Engineering Thermophysics, 26, SUPPL., pp. 89-92, (2005)
  • [10] Wang F., Zhang L., Zhang Z., Analysis on pressure fluctuation of unsteady flow in axial-flow pumps, Journal of Hydraulic Engineering, 38, 8, pp. 1003-1009, (2007)
12