建立了气流作用下激光辐照金属的数值模型，利用CFD软件模拟了不同气流速度、不同厚度金属锡板的激光辐照熔化烧蚀过程，并对比了实验结果。通过研究液态金属迁移机理及对流散热机理，分析了气流速度对不同厚度金属板的辐照效应的影响。研究结果表明，较厚金属板的辐照过程中会形成较深的熔坑，使得相同气流速度下熔化的液态金属较难移除，导致熔穿时间随气流速度增大而减小；较薄金属板的熔坑较浅，液态金属容易移除，由于移除的金属液滴混合在空气中增强了对流换热效果，因此熔穿时间随气流速度增大而增大。

A numerical model of laser irradiating metal under airflow is established. The flame ablations irradiated by laser under different airflow velocity and thickness of tin plates are simulated by the CFD software and contrasted with experimental results. Laser irradiation on metal plates with different thickness affected by airflow velocity is analyzed based on the research on liquid metal removal and heat convection mechanisms. The results indicate that the melting-through time of thicker metal plate decreases with the increasing airflow velocity as deeper craters are formed in the irradiation process and the melted liquid metal is more difficult to remove at the same airflow velocity; however, the melting-through time of thinner metal plate increases with the increasing airflow velocity as the craters are shallower, the liquid metal is easier to remove, and the heat convection is enhanced by mixing of the removed metal drop with air.