Abstract
In order to analyze the influence of blade outlet angle on inner flow field and performance of low-specific-speed centrifugal pump, the flow field in the pump with different blade outlet angles 32.5° and 39° was numerically calculated. The external performance experiment was also carried out on the pump. Based on SIMPLEC algorithm, time-average N-S equation and the rectified k-ɛ turbulent model were adopted during the process of computation. The distributions of velocity and pressure in pumps with different blade outlet angles were obtained by calculation. The numerical results show that backflow areas exist in the two impellers, while the inner flow has a little improvement in the impeller with larger blade outlet angle. Blade outlet angle has a certain influence on the static pressure near the long-blade leading edge and tongue, but it has little influence on the distribution of static pressure in the passages of impeller. The experiment results show that the low-specific-speed centrifugal pump with larger blade outlet angle has better hydraulic performance.
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T. Shigemitsu, J. Fukutomi, R. Nasada and K. Kaji. The Effect of Blade Outlet Angle on Performance and Internal Flow Condition of Mini Turbo-Pump. Journal of Thermal Science, vol.20, pp.32–38, (2011).
González J, Santolaria C. Unsteady flow structure and global variables in a centrifugal pump. ASME Journal of Fluids Engineering, vol.128, pp.937–946, (2006).
Guangwen Li. The flow measurement of centrifugal pump impeller with great outlet angle[J]. Journal of agricultural machinery, vol.30, pp.54–59, (1999).
Xianfang Wu, Minggao Tan, Houlin Liu, Yong Wang. Kai Wang. The influence of blade outlet angle on the centrifugal pump performance. Journal of Agricultural Mechanization Research, vol.9, pp.166–175, (2010).
Xijie He, Yuwen Huang, Yanxiao Zhao, Shuhong Li, Aixi Zhang. The influence of parameters in centrifugal pump on the efficiency. Drainage and Irrigation Machinery, vol.20, pp. 9–10, (2002).
Xijie He. The effect of main parameters on the low specific speed centrifugal pump. General Machinery, vol.1, pp. 63–65, (2004).
V. I. Veselov. Effect of the outlet angle β2 on the characteristics of low specific speed centrifugal pumps [J]. Power Technology and Engineering, vol.16, pp.267–273. (1982).
José Gonzúlez, Joaqun Fernández, Eduardo Blanco, et al. Numerical Simulation of the Dynamic Effects due to Impeller-Volute Interaction in a Centrifugal Pump[J]. Transactions of the ASME, vol.124, pp.348–354, (2002).
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This investigation was supported by National Natural Science Foundation of China granted No.50976105, No.51276172 and Zhejiang Provincial Natural Science Foundation Granted No.R1100530.
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Cui, B., Wang, C., Zhu, Z. et al. Influence of blade outlet angle on performance of low-specific-speed centrifugal pump. J. Therm. Sci. 22, 117–122 (2013). https://doi.org/10.1007/s11630-013-0601-6
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DOI: https://doi.org/10.1007/s11630-013-0601-6