Abstract：With mixture model,the solid-liquid two-phase flow in a double channel pump,with specific speed 80 was simulated.The effects of particle diameter,particle concentration and performance conditions on static pressure distribution,absolute velocity distribution,solid volume concentration distribution and energy characteristics were studied.The results indicate that the change of particle diameter has important effects on solid volume concentration distribution and little impact on static pressure distribution,absolute velocity distribution,and energy characteristics.The change of particle concentration has more effects on static pressure distribution,solid volume concentration distribution and energy characteristics,but has little impact on absolute velocity distribution.The change of performance conditions has obvious effects on static pressure distribution,absolute velocity distribution,and little impact on solid volume concentration distribution.The results also show that the trend of performace curves is the same as that of water centrifugal pump and the characteristics are the best when particle diameter is 0.075 mm and the solid volume concentration is 30%.
[1]Byskov R K,Jacobsen C B,Padersen N.Flow in a centrifugal pump impeller at deseign and off design conditions-Part Ⅱ:Large eddy simulations[J].Journal of Fluids Engineering,2003,125(1):73-83.[2]Delgosha O C,Patella R F,Rebound J L,et al.Experimental and numerical studies in a centrifugal pump with two dimension curved blades in cavitating condition[J].Journal of Fluids Engineering,2003,125(6):970-978.[3]González J,Santolaria C.Unsteady flow structure and global variables in a centrifugal pump[J].Journal of Fluids Engineering,2006,128(5):937-946.[4]Rodriguez C G,Egusquiza E,Santos I F.Frequencies in the vibration induced by the rotor stator interaction in a centrifugal pump turbine[J].Journal of Fluids Engineering,2007,129(11):1428-1435.[5]李红,袁寿其,袁建平,等.基于泵内纸浆悬浮液数值计算的纸浆泵设计[J].江苏大学学报:自然科学版,2007,28(1):51-55.Li Hong,Yuan Shouqi,Yuan Jianping,et al.Stock pump design based on numerical simulation of plup fiber suspension in pump[J].Journal of Jiangsu University:Natural Science Edition,2007,28(1):51-55.(in Chinese)[6]齐学义,阎晓伟,姬孝斌,等.双流道污水泵内固相体积分数分布规律[J].江苏大学学报:自然科学版,2009,30(2):156-159.Qi Xueyi,Yan Xiaowei,Ji Xiaobin,et al.Volume fraction distribution rules for solid phase in double channel sewage pump[J].Journal of Jiangsu University:Natural Science Edition,2009,30(2):156-159.(in Chinese)[7]张静,齐学义,侯祎华,等.双流道污水泵叶轮内部三维湍流流动的数值模拟[J].农业机械学报,2009,40(1):64-68.Zhang Jing,Qi Xueyi,Hou Weihua,et al.Numerical simulation of 3 D turbulent flow fields through double channel passage impeller[J].Transactions of the Chinese Society for Agricultural Machinery,2009,40(1):64-68.(in Chinese)[8]赵斌娟,袁寿其,刘厚林,等.双流道泵叶轮内贴体网格生成与CFD分析[J].排灌机械,2008,26(2):10-14.Zhao Binjuan,Yuan Shouqi,Liu Houlin,et al.Body fitted grid generation in double channel pump impeller and CFD analysis[J].Drainage and Irrigation Machinery,2008,26(2):10-14.(in Chinese)[9]刘厚林,袁寿其,施卫东,等.双流道叶轮内湍流的三维数值模拟[J].排灌机械,2002,20(4):5-8.Liu Houlin,Yuan Shouqi,Shi Weidong,et al.3-D numerical simulation for incompressible turbulent flow in the impellers of double channel pumps[J].Drainage and Irrigation Machinery,2002,20(4):5-8.(in Chinese)
