报告介绍了铅铋堆子通道分析模型的调研工作，基于上述模型开发了铅铋堆子通道分析程序，并利用已有的实验及CFD方法对程序稳态及瞬态计算结果进行了验证。最后介绍了子通道分析程序、系统分析程序、燃料性能分析程序及中子动力学程序耦合方式，完成多物理场多尺度耦合分析平台的开发与搭建，用于海洋铅铋堆的精确模拟。

In this paper, the research work on the subchannel analysis model of lead-bismuth reactor is introduced. Based on the above model, a program for subchannel analysis of lead-bismuth reactor is developed, and the steady-state and transient results of the program are verified by the existing experiments and CFD method.Finally, the coupling methods of subchannel analysis program, system analysis program, fuel performance analysis program and neutron dynamics program are introduced. The multi-physical field and multi-scale coupling analysis platform is developed and constructed for accurate simulation of Marine lead-bismuth reactor.