Numerical simulation for hydrodynamic noise of a multistage centrifugal pump under multi-working condition

被引：0
|
作者：
Wang K. [1 ]
Li Y. [1 ]
Liu H. [1 ]
Xia C. [1 ]
Liu Z. [2 ]
机构：
[1] Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang
[2] Jiangsu Yangzi River Pumps Co., Ltd., Kunshan
来源：
Li, Yu | 2018年 / Chinese Vibration Engineering Society卷 / 37期
关键词：
Blade number; Hydrodynamic noise; Multi-stage centrifugal pump; Multi-working condition; Vibration;
D O I：
10.13465/j.cnki.jvs.2018.09.008
中图分类号：
学科分类号：
摘要：
Hydrodynamic noise excited by a dipole acoustic source in a five-stage diffuser centrifugal pump was studied with Lighthill acoustic analogy theory. The transient flow field inside the five-stage centrifugal pump was numerically simulated, and the dipole acoustic source on wall surface of all stages was extracted. The direct boundary element method was used to calculate the internal flow-induced noise in the pump. The pump's vibration was calculated with the modal response method,vibration tests for the pump were also conducted. It was verified that the numerical prediction method for flow-induced noise in the pump has some certain feasibility. The results showed that with increase in flow rate, noise in the pump firstly increases, then decreases and increases again, the noise level is the minimum under the designed working condition; in the sound pressure frequency distribution, BPF2 and noise energy on its characteristic frequency increase with increase in flow rate, noise energy on a higher frequency range increases significantly; blade numbers of the first-stage impeller, another four stages' impellers and positive guide vane have larger effects on flow induced noise, while blade number of the negative guide vane has a relatively smaller effect. The study results provided a reference for the design of low-noise multi-stage centrifugal pumps. © 2018, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：50 / 55
页数：5
相关论文
共 24 条
  • [1] Guo S.J., Yoshiyuki M., Experimental investigations on pressure fluctuations and vibration of the impeller in a centrifugal pump with vaned diffusers, JSME International Journal Series B Fluids and Thermal Engineering, 48, 1, pp. 136-143, (2005)
  • [2] Trethewey M.W., Friell J.C., Chandra M.J., Et al., A spectral simulation approach to evaluate probabilistic measurement precision of a reactor coolant pump torsional vibration shaft crack monitoring system, Journal of Sound and Vibration, 310, 4, pp. 1036-1056, (2008)
  • [3] Gulich J.F., Centrifugal Pumps, (2010)
  • [4] Yang A., Xu Y., Li G., Et al., Effect of blade loading on fluid-induced exciting force and noise in centrifugal pumps, Journal of Drainage and Irrigation Machinery Engineering, 32, 1, pp. 27-32, (2014)
  • [5] Zheng Y., Chen Y., Mao X., Et al., Pressure pulsation characteristics and its impact on flow-induced noise in mixed-flow pump, Transactions of the Chinese Society of Agricultural Engineering, 31, 23, pp. 67-73, (2015)
  • [6] He T., Yin Z., Sun Y., Numerical analysis for flow induced vibration of a centrifugal pump, Journal of Vibration and Shock, 31, 12, pp. 96-102, (2012)
  • [7] Zhang D., Geng L., Shi W., Et al., Experimental investigation on pressure fluctuation and vibration in axial-flow pump model, Transactions of the Chinese Society for Agricultural Machinery, 46, 6, pp. 66-72, (2015)
  • [8] Jiang A., Li G., Zhou P., Et al., Vibration incited by fluid forces on centrifugal pump from volute path and impeller path, Journal of Vibration and Shock, 33, 10, pp. 1-7, (2014)
  • [9] Si Q., Yuan S., Yuan J., Experimental study on the influence of impeller-tongue gap on the performance and flow-induced noise characteristics of centrifugal pumps, Journal of Vibration and Shock, 35, 3, pp. 164-168, (2016)
  • [10] Huang G., Chang Y., Zhang H., Et al., Hydraulic redesign on a marine centrifugal pump for hydro-borne vibration and noise reduction, Journal of Ship Mechanics, 13, 2, pp. 313-318, (2009)
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