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热辐射与物质相互作用及辐射光子在物质中的传输是惯性约束聚变研究中的重要课题.介绍了基于隐式蒙特卡罗方法的辐射输运方程,在该方程的积分-微分形式基础上,推导了利于蒙特卡罗方法模拟的等价的积分输运方程;基于积分方程设计数值模拟流程,编写三维蒙特卡罗数值模拟程序;针对热辐射输运典型问题及benchmark问题开展了数值实验,计算结果验证了方法的适应性及程序的正确性.
The interaction between thermal radiation and matter and the transfer of radiation photons in matter are important topics in the study of inertial confinement fusion.The radiation transport equation based on implicit Monte Carlo method is introduced. Based on the integral-differential form of this equation, The equivalent integral transport equation which is propitious to the Monte Carlo method simulation is deduced. The numerical simulation flow is designed based on the integral equation, and the three-dimensional Monte Carlo numerical simulation program is compiled. The numerical experiments are carried out for the typical problems of thermal radiation transport and the benchmark problem, The results verify the adaptability of the method and the correctness of the procedure.