【摘要】 基于包含相变过程的热传导方程,采用显热容法,对ms脉冲激光辐照下,金属靶材的温升、液化及汽化的全过程进行了数值模拟。分别考查了不同激光强度辐照条件下,不同深度处材料体内的温度、固-液界面和液-汽界面的位置和速度等随时间的变化规律。在保证计算精度的同时,本方法具有简单快速的特点。更多还原

【Abstract】 Based on the thermal conduction equations,taken into account of the influence of phase transitions,a sensible heat capacity numerical method is uti- lized to simulate the whole processes of heating,melting and vaporization of metal targets under long pulse laser irradiations.The temperature distributions in the tar- gets,the localities anti the velocities of solid-liquid and/or liquid-vapor interfaces under different laser intensities are discussed in details in this paper.The dis- tinct advantage of the numerical method is its simplicity,rapidity and with high precisions.更多还原