基于RELAP5/FLUENT耦合程序的熔盐堆反应性引入瞬态分析  

The transient analysis of molten salt reactor reactivity insertion based on RELAP5/FLUENT coupled program

作　　者：何帆 蔡翔舟[1,2,3] 郭威[1,2,3] 何龙 崔蕾[1,2,3] HE Fan;CAI Xiangzhou;GUOWei;HE Long;CUI Lei(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;University of Chinese Academy of Sciences,Beijing 100049,China;Innovative Academies in TMSR Energy System,Chinese Academy of Sciences,Shanghai 201800,China)

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]中国科学院大学,北京100049 [3]中国科学院先进核能创新研究院,上海201800

出　　处：《核技术》2021年第3期82-89,共8页Nuclear Techniques

基　　金：中国科学院前沿科学重点研究项目(No.QYZDY-SSW-JSC016)资助。

摘　　要：熔盐堆具有良好的中子经济性、固有安全性和可在线换料等特点。以石墨慢化通道式熔盐堆(Molten Salt Reactor,MSR)为研究对象,基于RELAP5/FLUENT耦合程序,建立了熔盐堆一回路模型,并在熔盐堆堆芯分别引入0.000 1、0.000 2和0.000 5反应性的情况下进行瞬态分析。结果表明:在堆芯反应性引入下,由于堆芯负的温度反应性,堆芯内最高温度和熔盐出口温度远低于安全允许限值,验证了熔盐堆具有良好的应对反应性引入事件的能力。[Background]Molten salt reactor(MSR)is an ideal advanced reactor with good neutron economy,inherent safety and online refuelling.[Purpose]This study aims to evaluate the transient behavior of reactive insertion transients of MSR.[Methods]Based on the RELAP5/FLUENT coupling program and the establishment of the primary circuit model,the graphite-moderated channel type molten salt reactor was studied,and transient analysis was conducted when the reactor core was inserted with 0.0001,0.0002,and 0.0005 reactivities.[Results]The results show that under the concerned reactivity insertion,the maximum temperature of the reactor core and the outlet temperature of the salt are both lower than the safety allowable limit due to the negative temperature reactivity of the reactor core.[Conclusions]This study verifies the good response ability of MSR to reactivity insertion events.

关 键 词：RELAP5/FLUENT 熔盐堆 反应性引入 热工水力 

分 类 号：TL99[核科学技术—核技术及应用]