收集板对金属原子二维平面蒸发的影响

为了分析原子法激光同位素分离工程 (AVL IS)分离器中加入精料收集板对原子蒸气密度、速度和温度等物理特性的影响 ,采用直接模拟蒙特卡罗 DSMC (direct-simulation Monte Carlo)方法模拟了铀原子二维平面蒸发动力学过程 ,着重研究了 Knudsen数 K n变化和收集板温度变化对蒸气物理特性的影响。模拟结果表明 :收集板中间 ,蒸气密度增加 ,速度下降 ,温度上升 ;蒸气的 K n越小 ,蒸气的速度越高 ,相对温度越低 ;收集板的温度越高 ,蒸气纵向速度越低 ,温度越高 ,密度越高

The collector plate's influence on 2-D metal evaporation

The direct-simulation Monte Carlo method (DSMC) was used to simulate 2-D metal evaporation from a long narrow crucible to analyse the collector plate's influence on the atomic vapor physical parameters such as density, velocity and temperature distributions in atomic vapor laser isotope separation (AVLIS). The research focused on the changes of the physical parameters of the atomic movement for changes of the Knudsen number and the collector plate temperature. The simulation results show that the collector plate clearly influences the atomic vapor. As the vapor density and temperature increase in the plates the velocity decreases. Smaller vapor Knudsen number results in higher velocity and lower relative vapor temperature. Higher collector plate temperature results in lower vapor velocity and higher temperature and density.