激光辐照旋转飞行靶温度场数值模拟

摘要

Taking laser irradiating rolling flying target as the background ,the heat conduction model is established ,w hich includes the influences of atmosphere transmission ,and varying irradia-ting area and power destiny distributing as target flying and rolling . The numerical simulation of three-dimensional temperature field of flying target is calculated by the finite volume method .The in-fluences of rolling velocity to temperature field and thermal explosion are analyzed .The analytical re-sults show that the highest temperature of column surface becomes smaller ,the energy concentration and explosion of the explosive becomes more difficult as rolling velocity of target is greater .%以激光辐照旋转飞行靶为研究背景，考虑激光的大气传输，以及激光辐照面积和功率密度分布随靶目标旋转和飞行的变化，建立激光辐照热传导模型；利用有限容积法，得到靶目标三维温度场的数值解；分析目标旋转速率对温度场分布以及炸药热爆炸的影响。分析结果表明：靶目标旋转速率越大，靶表面最高温度值越小，热量越不容易集中，越不利于炸药的热起爆。