【摘要】 本文用直接模拟蒙特卡罗法，对再入体驻点区域的流场、光辐射特性进行了研究．针对头部锥体驻点区（包括激波层），建立了流场中的化学反应模型，中性粒子和等离子体的热运动、粒子间碰撞的理论模型，碰撞激发辐射和化学发光辐射的物理模型．给出了样本粒子运动方向和速率、粒子碰撞对的选择等蒙特卡罗法概率模型和计算方法．更多还原

【Abstract】 By means of the direct simulation Monte Carlo method, the flow-field and optical radiation characteristic of stagnation region in reentry process are calculated in this paper. Inthe stagnation region (including shock layer) at head of reentry vehicle, the chemical reaction model in flow field, thermal motion model of neutral particle and plasma body,collisionmodel among particles, the models of thermal exciting emitting and chemical irradiate areestablished. The MC probability model of moving direction, velocity of particles and that ofchoice of collision couple are given as well.更多还原