基于EDEM FLUENT的液力湍流磨内部流场的数值模拟

为了细化物料细度及有效提高磨机研磨效率,建立基于EDEM软件的液力湍流磨颗粒离散元模型,通过EDEM FLUENT耦合仿真,获得涡轮叶片主要参数影响筒内流速机湍流强度的相关数据,进而分析磨介物料在筒内的运动和湍流状态.试验结果得出,磨介颗粒分布主要位于中下方,筒内顶部两侧的磨介颗粒数目较少.筒内产生了明显的涡流现象,产...

Numerical Simulation of Internal Flow Field in Hydrodynamic Turbulent Mills Based on EDEM-Fluent

In order to refine the material fineness and improve the efficiency of grinding mills, a discrete element model of EDEM software was built based on fluid turbulent grinding particle. Related data of main parameters for turbine blade which affects machine cylinder velocity turbulence intensity were obtained through the EDEM-FLUENT coupled simulation. Grinding dielectric material inside the cylinder movement and the turbulent state were then studied. The results show that abrasive particles are mainly located in the middle and lower part, and the number of abrasive particles on both sides of the top of the cylinder is fairly low. Moreover, there is obvious eddy current phenomenon in the cylinder, which produces strong hydraulic flow, significantly improving the grinding efficiency and strengthening the impact energy between the grinding medium and the material. The grinding is, therefore, complete. This study provides theoretical and technical implications for the development and application of hydrodynamic turbulent mills.