Experimental study on movement of particles in centrifugal impeller  

作　　者：GU Lei NI Fusheng XU Liqun LIU Mingxing 

机构地区：[1]Engineering Research Center of Dredging Technology of Ministry of Education, Hohai University, Changzhou, Jiangsu 213022, China

出　　处：《排灌机械工程学报》2018年第3期191-196,共6页Journal of Drainage and Irrigation Machinery Engineering

摘　　要：The slurry pump is the key component of a dredger. Solid particles have strong influence on the performance of a slurry pump. The movement of solid particles in a centrifugal impeller was studied using particle image velocimetry(PIV) measurement. The experiments were conducted in a dredging pump model at Hohai University. Some transparent glass spheres with diameter of 0. 2-0. 4 mm were used as solid particles. The concentration and relative velocities of the particles were analyzed to investigate the particle trajectory. The results show that the concentration of the particles on the pressure surfaces of the blades is higher than on the suction surfaces,and the particles tend to move towards the suction surfaces. Moreover,the particles have faster relative velocities than the liquid phase through the flow channels of the impeller.The slurry pump is the key component of a dredger. Solid particles have strong influence on the performance of a slurry pump. The movement of solid particles in a centrifugal impeller was studied using particle image velocimetry（PIV） measurement. The experiments were conducted in a dredging pump model at Hohai University. Some transparent glass spheres with diameter of 0. 2-0. 4 mm were used as solid particles. The concentration and relative velocities of the particles were analyzed to investigate the particle trajectory. The results show that the concentration of the particles on the pressure surfaces of the blades is higher than on the suction surfaces,and the particles tend to move towards the suction surfaces. Moreover,the particles have faster relative velocities than the liquid phase through the flow channels of the impeller.

关 键 词：CENTRIFUGAL IMPELLER MOVEMENT of PARTICLES concentration relative VELOCITIES particle image velocimetry(PIV) 

分 类 号：S277.9[农业科学—农业水土工程] U616.6[农业科学—农业工程]