Abstract: Three kinds of adjustable high specific speed mixed-flow pump were simulated by using commercial software Fluent.Reynolds time-averaged N-S equations and the standard k-ε turbulent model were adopted.Multiple reference frame model of rotating fluid mechanical model was used.Absolute velocity and static pressure distribution of the cross-section of the highest point at entrance of blade of 0 riding angle model were mainly analyzed.Relative velocity and static pressure of the pressure surface of the impeller and static pressure of guide blade were also analyzed and compared.The impact phenomenon at back flow of +4 riding angle was captured.Relative velocity of pressure surface of guide blade of 0 riding angle was analyzed.In the result,guide blade sufficiently displays its function of energy conversion and anti-circulation.The interior flow of high specific speed mixed-flow pump was revealed by the results of the analysis.
[1]何希杰,李艳辉,高瑛,等.混流泵的现状与发展趋势[J].通用机械,2003(9):21-23.He Xiji,Li Yanhui,Gao Ying,et al.The present status and development of mixed-flow pump[J].General Machinery,2003(9):21-23.(in Chinese)[2]曹树良,梁莉,祝宝山,等.高比转速混流泵叶轮设计方法[J].江苏大学学报:自然科学版,2005,26(3):185-188.Cao Shuliang,Liang Li,Zhu Baoshan,et al.Design method for impeller of high specific speed mixed-flow pump[J].Journal of Jiangsu University:Natural Science Edition,2005,26(3):185-188.(in Chinese)[3]刘琦,袁寿其.高比转速斜流泵内部三维湍流场数值模拟的研究[J].农机化研究,2007(7):75-79.Liu Qi,Yuan Shouqi.Numerical simulation of 3D turbulent flow in the mixed-flow pump with high specific speed[J].Journal of Agricultural Mechanization Research,2007(7):75-79.(in Chinese)[4]陆林广,黄金军,陈坚,等.灯泡贯流泵装置的三维流动数值模拟[J].排灌机械,2007,25(3):15-20.Lu Linguang,Huang Jinjun,Chen Jian,et al.Numerical study of 3D flow in a bulb tubular pump system[J].Drainage and Irrigation Machinery,2007,25(3):15-20.(in Chinese)[5]Li Xianhua,Zhang Shujia,Zhu Baolin,et al.The Study of the k-ε Turbulence Model for Numerical Simulation of Centrifugal Pump[C]∥7th International Conference on Computer-Aided Industrial Design and Conceptual Design,Hangzhou:IEEE Conference Proceedings,2006:70-75.[6]Stefan aus der Wiesche.Numerical simulation of cavitation effects behind obstacles and in an automotive fuel jet pump[J].Heat and Mass Transfer,2005,41(7):615-624.[7]Levada A,Mascarenhas N,Tannus A.Improving Potts MRF model parameter estimation in image analysis[C]∥2008 IEEE 11th International Conference on Computational Science and Engineering (CSE),Brazil,16-18 July 2008,Piscataway:IEEE,2008:211-218.[8]Levada A,Mascarenhas N,Tannus A.Improving Potts MRF model parameter estimation using higher-order neighborhood systems on stochastic image modeling[C]∥15th International Conference on Systems,Signals and Image Processing (IWSSIP),Bratislava,Slovakia,25-28 June 2008,Piscataway:IEEE,2008:385-388.[9]陆林广,伍杰,陈阿萍,等.立式轴流泵装置的三维湍流流动数值模拟[J].排灌机械,2007,25(1):29-32.Lu Linguang,Wu Jie,Chen Aping,et al.Numerical simulation of 3D turbulent flow in a vertical axial-flow pump system[J].Drainage and Irrigation Machinery,2007,25(1):29-32.(in Chinese)[10]曹树良,王万鹏,祝宝山.离心泵压水室内部流动数值模拟[J].江苏大学学报:自然科学报,2004,25(3):185-188.Cao Shuliang,Wang Wanpeng,Zhu Baoshan.Numerical simulation of internal flow through the spiral casing of centrifugal pump[J].Journal of Jiangsu University:Natural Science Edition,2004,25(3):185-188.(in Chinese)