基于离散元法的沙粒冲击沙尘混合表面的动力学过程研究
孙钰博, 张泓欣, 王正师, 贾淑明

Investigation of the dynamic process of sand particle impacting the sand-dust mixed bed based on the Discrete Element Method
Yubo Sun, Hongxin Zhang, Zhengshi Wang, Shuming Jia
表1 DEM模拟粒-床碰撞的参数[28,45]
Table 1 Parameters of particle-bed collision applied in DEM simulation[28,45]
参数描述沙粒尘粒
η/%含沙量70/75/80/85/90/95
d/μm颗粒粒径20060
g/(m·s-2)重力加速度9.8
ρp /(kg·m-3)颗粒密度26502 000
ρf /(kg·m-3)空气密度1.225
k*法向与切向刚度比32
κ卡门常数0.4
μ摩擦系数0.30.5
E/(N· m-2)杨氏模量1.0×1061.0×104