激光辐照旋转飞行靶温度场数值模拟

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。

Numerical Simulation of Temperature Field of Rolling Flying Target Irradiated by Laser

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 .