Collisions between particles and the wall covered by a liquid layer play an important role in many different industrial processes (e.g., chemical, pharmaceutical, and transportation). Understanding the rebound motion law of the collision between particles and the wall covered by a liquid layer is vital to ensure the high efficiency of processes such as wet granulation and fluid catalytic cracking. In the present study, we investigated the influence of different collision angles on the liquid bridge geometry, particle motions, particle energy, and other collision details based on the oblique collisions between particles and the target plate covered by a liquid layer. Results showed that the collision angle of particles has a great effect on the liquid bridge geometry. Moreover, the liquid bridge caused by different collision angles initially increases the particle deflection angle difference and then decreases, and this influence gradually increases with the increase of the collision angle. In addition, the collision angle greatly affects the particle’s energy.

颗粒与液体层覆盖的壁之间的碰撞在许多不同的工业过程（例如，化学、制药和运输）中起着重要作用。了解颗粒与被液层覆盖的壁面碰撞的回弹运动规律对于确保湿法制粒和流化催化裂化等工艺的高效性至关重要。在本研究中，我们基于粒子与被液体层覆盖的目标板之间的斜向碰撞，研究了不同碰撞角度对液桥几何形状、粒子运动、粒子能量和其他碰撞细节的影响。结果表明，粒子的碰撞角度对液桥几何形状有很大影响。而且，不同碰撞角引起的液桥先增大粒子偏转角差，然后减小，这种影响随着碰撞角的增大而逐渐增大。此外，碰撞角度极大地影响粒子的能量。