Abstract：Concerning the status of low head and low efficiency of the mixed transmission disc pump when transporting the crude oil,a structure improvement for the original impeller was made,and the solid/liquid two-phase turbulent flow in the pump was simulated by using Eulerian multiphase model,standard turbulence model and SIMPLE algorithm.The distributions of pressure and velocity in the pump and the different relation curves for solid phase particle concentration as function of head,efficiency and mass flow were obtianed.The results show that the static and total pressures keep increasing from inlet to outlet,the maximum pressure appears at the outer wall surface between volute spiral and diffuser.The solid phase particles are mainly concentrated on the surface of blades,so they will aggravate the speed of wear and destroy.The head and efficiency increase slightly when the solid phase particle concentration increases,and the head increases comparing the pre and post curves.
[1]车得福,李会雄.多相流及其应用[M].西安:西安交通大学出版社,2007.[2]张爱习.摩擦泵的研制[J].河北机械,1994(3):29-31.Zhang Aixi.The development of friction pump[J].Hebei Machinery,1994(3):29-31.(in Chinese)[3]马希金,肖聪,张人会.圆盘摩擦泵在轴封中的应用[J].排灌机械,2004,22(5):40-42.Ma Xijin,Xiao Cong,Zhan Renhui.Application of disk friction pump in axis seal[J].Drainage and Irrigation Machinery,2004,22(5):40-42.(in Chinese)[4]韩占忠,王敬,王小平.FLUENT流体工程仿真实例与应用[M].北京:北京理工大学出版社,2004.[5]Chou P Y.On the velocity correlations and the equations of turbulent vorticity fluctuation[J].Quarterly of Applied Mathematics,1945(1):33-54.[6]Rodi W,Spalding D B.A two-parameter model of turbulence and its application to separated and reattached flows[J].Numerical Heat Transfer,1984(7):59-75.[7]王福军.计算流体动力学分析--CFD软件原理与应用[M].北京:清华大学出版社,2005.[8]王秋红.螺旋离心泵内固液两相流场的CFD数值模拟[D].兰州:兰州理工大学,2005.[9]刘顺隆,郑群.计算流体力学[M].哈尔滨:哈尔滨工业大学出版社,1998.
