Direct numerical simulation is used for solving the Navier-Stokes equation and Lagrangian approach is used to track the bubble trajectories through the action of forces imposed by the fluid and the gravity.

• 采用直接数值模拟方法模拟流体流动，并用拉格朗日法跟踪气泡受流体和重力作用所产生的运动轨迹。