Abstract：To investigate the rules of collision between a droplet and a spherical particle, a physical model was established to reflect the collision. The model was used to simulate the dynamic collision process, and the droplet radius spreading coefficient and the liquid film center height coefficient were also investigated. The effects of parameters of impact velocity, wetting angle and size ratio of droplet to particle on the collision were analyzed. The results show that within the scope of this paper, the increasing of impact velocity can increase the maximum radius spreading coefficient. When the impact velocity is 04 m·s-1, the droplets rebound completely. When the impact velocity is increased to 14 m·s-1, the droplets are broken. When the impact speed and the size ratio of droplet to particle are constant, the wetting angle is proportional to the maximum liquid film center height coefficient. When the wetting angle is less than 90°, with the increasing of size ratio of droplet to particle, the probability of droplet coating is increased.
杜敏，宋亮，孙文涛，王跃成. 液滴与球形颗粒相互碰撞的数值模拟[J]. 江苏大学学报（自然科学版）, 2021, 42(3): 284-290.
DU Min， SONG Liang， SUN Wentao， WANG Yuecheng. Numerical simulation of a droplet colliding with a spherical particle[J]. Journal of Jiangsu University(Natural Science Eidtion)
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2021, Vol. 42 
