采用数值模拟的方法,研究了沸腾雾化喷射过程中热壁面薄液膜层受到液滴碰撞扰动时液膜层内汽泡运动、相界面变化和由此引起的壁面换热特性。模拟结果显示汽泡生长初期相界面变化与液膜层内二次核化特征与文献结果吻合良好,汽泡生长后期相界面变化存在滞后。讨论了液滴下降速度、液滴直径与初始位置、多液滴碰撞对液膜层内流动与壁面换热的影响。 The bubble motion, phase interface changes and the heat transfer characteristics of the wall due to droplet collisions in the hot wall thin film layer were investigated by numerical simulation. The simulation results show that the change of phase interface at the initial stage of bubble growth is in good agreement with the literature results in the second nucleation in the liquid film layer, and there is a lag in the change of phase interface at the late stage of bubble growth. The effects of drop velocity, droplet diameter and initial position, and the effect of multiple drop collisions on the flow and wall heat transfer in the liquid film were discussed.