新型钍基熔盐堆多物理计算模型及分析

摘要

A tightly coupled multi-physics model for molten salt reactor(MSR)system involving the reactor core and the rest of the primary loop has been developed and employed in an in-house developed computer code TANG-MSR.In this paper,the computer code is used to simulate the behavior of steady state and transient state of our redesigned thorium molten salt reactor (TMSR).The simulation results demonstrate that the models employed in TANG-MSR can capture major physics phenomena in MSR and the redesigned TMSR has excellent performance of safety and sustainability.%针对熔盐堆系统特点,提出了包含堆芯及其他主回路系统在内的多物理紧密耦合计算模型,并在此基础上自主开发了多物理分析程序TANG-MSR。利用该程序进行了新型钍基熔盐堆(TMSR)的设计,并对设计方案进行了稳态及瞬态分析。相关计算结果表明,TANG-MSR 所采用的多物理模型能够很好地捕捉熔盐堆的主要物理现象,提出的新型熔盐堆设计在安全性和可持续性方面表现优异。