摘要
流动在 hopper 的椭圆体的粒子被使用分离元素方法(DEM ) 模仿，并且由多元素方法描述了。为在 hopper 的椭圆体的粒子运动的接触察觉算法和方程被开发。并且模拟结果被实验证实。另外，集体流动率，压力分发和二种粒子的速度分发被检验。结果证明椭圆体的粒子的集体流动率比球形的粒子的小。有在连接的顶的压力落下的最大的价值。而且，压力落下减少，排出的时间增加。球形的粒子的速度比的大椭圆体。
Ellipsoidal particles flowing in the hopper were simulated by using the discrete element method （DEM）, and described by the multi-element method. The contact detection algorithm and equations for ellipsoidal particle motion in hopper were developed. And the simulation results were confirmed by experiment. Additionally, the mass flow rate, pressure distribution and velocity distribu- tion of two kinds of particles were examined. The results show that the mass flow rate of ellipsoidal particles is smaller than that of spherical particles. There is a maximum value of pressure drop at the top of the junction. Besides, the pressure drop decreases with the discharging time increasing. The velocity of spherical particle is larger than that of ellipsoidal.
