Effect of Circular Non-Smooth Surface Blades on
 Cavitation Characteristics of Centrifugal Pump

doi:10.16183/j.cnki.jsjtu.2019.070

Abstract

Abstract: In order to improve the anti-cavitation characteristics of centrifugal pumps, based on the bionics principle, the circular bionic non-smooth surface structure was arranged at the suction surface where the centrifugal pump blade was most prone to cavitation. The numerical simulation method was used to analyze the external characteristics, bubble volume, turbulent kinetic energy and pressure distribution characteristics of centrifugal pumps with different diameters of circular non-smooth surface blades under different cavitation allowances. The effects of circular non-smooth surface blades on the cavitation performance of centrifugal pumps were studied. The results show that centrifugal pumps with circular protrusion diameter of 0.5 mm and 1.0 mm have high heads and great efficiency, which are close to the values of centrifugal pumps with smooth surface blades. In severe cavitation, the centrifugal pump with circular protrusion diameter of 1.0 mm has the smallest bubble volume. The low pressure section of the impeller is small, the pressure gradient is large, and the turbulent energy near the wall surface of the suction surface of the blade is increased, with the result that the pressure drag caused by the separation is reduced, which has a good inhibitory effect on cavitation.

Key words: centrifugal pump, cavitation, non-smooth surface, numerical simulation, bubble

CLC Number:

O 351.2

MOU Jiegang, ZHANG Zicheng, GU Yunqing, SHI Zhengzan, ZHENG Shuihua. Effect of Circular Non-Smooth Surface Blades on Cavitation Characteristics of Centrifugal Pump[J]. Journal of Shanghai Jiaotong University, 2020, 54(6): 577-583.

References

［1］牟介刚, 陈莹, 谷云庆, 等. 不同空化程度下离心泵流固耦合特性研究［J］. 振动与冲击, 2016, 35(23): 203-208. MOU Jiegang, CHEN Ying, GU Yunqing, et al. Fluid-solid interaction characteristics of a centrifugal pump under different cavitation levels［J］. Journal of Vibration and Shock, 2016, 35(23): 203-208. ［2］蒋爱华, 章艺, 靳思宇, 等. 离心泵流体激励力的研究: 蜗壳部分［J］. 振动与冲击, 2012, 31(4): 60-66. JIANG Aihua, ZHANG Yi, JIN Siyu, et al. Fluid exciting forces on centrifugual pump part Ⅰ: Force on volute［J］. Journal of Vibration and Shock, 2012, 31(4): 60-66. ［3］MAHSA E B, ALIREZA R, MEHDI A. The influence of SiO2 nanoparticles on cavitation initiation and intensity in a centrifugal water pump［J］. Experimental Thermal and Fluid Science, 2014, 55: 71-76. ［4］ZHANG Y N, QIAN Z D, JI B, et al. A review of microscopic interactions between cavitation bubbles and particles in silt-laden flow［J］. Renewable and Sustainable Energy Reviews, 2016, 56: 303-318. ［5］赵伟国, 赵国寿, 咸丽霞, 等. 离心泵叶片表面布置障碍物抑制空化的数值模拟与实验［J］. 农业机械学报, 2017, 48(9): 111-120. ZHAO Weiguo, ZHAO Guoshou, XIAN Lixia, et al. Effect of surface-fitted obstacle in centrifugal pump on cavitation suppression［J］. Transactions of the Chinese Society for Agricultural Machinery, 2017, 48(9): 111-120. ［6］牟介刚, 代东顺, 谷云庆, 等. 仿生蜗壳结构对离心泵隔舌区域脉动特性的影响［J］. 上海交通大学学报, 2016, 50(9): 1493-1499. MOU Jiegang, DAI Dongshun, GU Yunqing, et al. Effect of structure of bionic volute on pulsation cha-racteristic near volute tongue in centrifugal pump［J］. Journal of Shanghai Jiao Tong University, 2016, 50(9): 1493-1499. ［7］牟介刚, 刘剑, 谷云庆, 等. 仿生蜗壳离心泵内部非定常流动特性分析［J］. 浙江大学学报(工学版), 2016, 50(5): 927-933. MOU Jiegang, LIU Jian, GU Yunqing, et al. Analysis of unsteady flow characteristics in centrifugal pump with bionic volute［J］. Journal of Zhejiang University (Engineering edition), 2016, 50(5): 927-933. ［8］NIU S C, LI B, MU Z Z, et al. Excellent structure-based multifunction of morpho butterfly wings: A review［J］. Journal of Bionic Engineering, 2015, 12(2): 170-189. ［9］SHI W D, WANG C, WANG W, et al. Numerical calculation on cavitation pressure pulsation in centri-fugal pump［J］. Advances in Mechanical Engineering, 2014, 6(1): 1-8. ［10］STOPA M M, CARDOSO B J, MARTINEZ C B, et al. Incipient detection of cavitation phenomenon in centrifugal pumps［J］. IEEE Transactions on Industry Applications, 2014, 50(1): 120-126. ［11］LIU H L, LIU D X; WANG Y, et al. Experimental investigation and numerical analysis of unsteady attached sheet-cavitating flows in a centrifugal pump［J］. Journal of Hydrodynamics, 2013, 25(3): 370-378. ［12］TAN L, ZHU B S, CAO S L, et al. Numerical simulation of unsteady cavitation flow in a centrifugal pump at off-design conditions［J］. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2014, 228(11): 1994-2006. ［13］TAN L, ZHU B S, CAO S L, et al. Influence of prewhirl regulation by inlet guide vanes on cavitation performance of a centrifugal pump［J］. Energies, 2014, 7(2): 1050-1065. ［14］LEE K H, KANG S H, CHOI J W. Cavitation performance and instability of a two-bladed inducer［J］. Journal of Propulsion and Power, 2012, 28(6): 1168-1175. ［15］谷云庆, 牟介刚, 代东顺, 等. 基于蚯蚓背孔射流的仿生射流表面减阻性能研究［J］. 物理学报, 2015, 64(2): 310-319. GU Yunqing, MOU Jiegang, DAI Dongshun, et al. Characteristics on drag reduction of bionic jet surface based on earthworm’s back orifice jet［J］. Acta Physica Sinica, 2015, 64(2): 310-319. ［16］SINGHAL A K, ATHAVALE MM, LI H Y, et al. Mathematical basis and validation of the full cavitation model［J］. Journal of Fluids Engineering, 2002, 124(3): 617-624.

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Effect of Circular Non-Smooth Surface Blades on Cavitation Characteristics of Centrifugal Pump

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