Abstract：The front guide has excellent performance of inlet,and can improve the condition of inlet of the main impeller.In this paper based on large-eddy model obtained from spatial filtering of continuity equation and momentum equation and by CFD software,the three-dimensional incompressible turbulent flow of front guide impeller of axial flow pump was simulated under the design condition.The velocity,pressure and streamline distribution of the internal flow field of front guide impeller are analysed.The results show that the increase of the static pressure of guide blade from inlet to outlet enhances anti-cavitation performance;there exists an area prone to cavitation in inlet of back blade;blade surface pressure distribution increases along the blade lead and radial direction,and no great impact and secondary flow phenomena occur.Streamline along the guide impeller winds well,and the phenomena of vortex and circumfluence don′t appear.A useful reference of axial flow pump design,improvement and optimization was obtained.
王春林， 吴志旺， 赵佰通， 刘红光， 易同祥. 轴流泵前置导轮内部流场的大涡模拟[J]. 排灌机械工程学报, 2009, 27(5): 302-305.
Wang Chunlin,Wu Zhiwang,Zhao Baitong,Liu Hongguang,Yi Tongxiang. Large eddy simulation of interior flow field in front guide impeller of axial flow pump. Journal of Drainage and Irrigation Machinery Engin, 2009, 27(5): 302-305.
[1]王春林,马庆勇,邢岩,等.梯形迷宫螺旋泵内部流动数值计算及性能预测[J].江苏大学学报:自然科学版,2008,29(2):138-142.Wang Chunlin,Ma Qingyong,Xing Yan,et al.Nume rical simulation and performance prediction inside trapeziform labyrinth screw pump[J].Journal of Jiangsu University:Natural Science Edition,2008,29(2):138-142.(in Chinese)[2]王春林,郑海霞,张浩,等.可调叶片高比转速混流泵内部流场数值模拟[J].排灌机械,2009,27(1):30-34.Wang Chunlin,Zheng Haixia,Zhang Hao,et al.Nume rical simulation for adjustable high specific speed mixed flow pump[J].Drainage and Irrigation Machinery,2009,27(1):30-34.(in Chinese)[3]Peng X,Corzine K A,Venayagamoorthy G K.Multiple reference frame based control of three phase PWM boost rectifiers under unbalanced and distorted input conditions[J].Transactions on Power Electronics,2008,23(4):2006-2017.[4]王春林,吴志旺,司艳雷,等.旋流自吸泵气两相流数值模拟[J].排灌机械,2009,27(3):163-167.Wang Chunlin,Wu Zhiwang,Si Yanlei,et al.Gas liquid two phase flow numerical simulation of a vortex flow self priming pump[J].Drainage and Irrigation Machi nery,2009,27(3):163-167.(in Chinese)[5]Wang Fujun,Li Yaojun,Cong Guohui,et al.CFD simulation of 3D flow in large bore axial flow pump with half elbow suction pump[J].Journal of Hydrodynamics,2006,18(2):243-247.[6]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)[7]Kumar S,Bergada J M,Watton J.Axial piston pump grooved slipper analysis by CFD simulation of three dimensional N-S equation in cylindrical coordinates[J].Computers and Fluids,2009,38(3):648-663.[8]Stoesser T,Nikora V I.Flow structure over square bars at intermediate submergence:large eddy simulation study of bar spacing effect[J].Acta Geophysica,2008,58(3):876-893.
