基于计算流体力学方法的乒乓球轨迹仿真

Simulation of Table Tennis Trajectory Based on Computational Fluid Dynamic Method

采用计算流体力学(CFD)方法获取乒乓球在不同运动状态下的流场及轨迹,与运动学求解方法进行比较验证CFD方法的优越性。结果显示:基于CFD方法的计算结果比运动学求解方法更符合实际;旋转方向对乒乓球轨迹有很大影响,上旋球轨迹偏低,下旋球轨迹偏高,侧旋球轨迹向左向偏转;旋转速度对乒乓球轨迹也有很大影响,上旋球乒乓球旋转速度越大其落点距离越近;乒乓球的旋转运动将导致更为复杂的流场状态。

The trajectories of table tennis under different motions are obtained based on Computational Fluid Dynamics （CFD） method. Compared with the kinematics method, the superiority of CFD method is verified. The study analyzes the trajectories and flow fields of the table tennis on different rotational speeds in different directions and draws the following conclusions： The CFD method is more credible than kinematic method. The rotation directions have a significant impact on the trajectory, with a low trajectory for topspins, high trajectory for backspins, and a leftward trajectory for side spin. Rotating speed also has a great impact on the trajectory of table tennis： the greater the rotation speed of the topspin table tennis is, the closer the landing point is. The rotational movement of table tennis will lead to more complicated flow field state.