相似性分析方法在零功率堆物理设计上的应用

Application of Similarity Analysis Method in Physical Design of Zero Power Reactor

对于新型反应堆的研究设计,零功率堆实验是不可缺少的阶段。为评估零功率堆和目标堆型间物理特性的相似程度,根据敏感性和不确定性分析技术,引入了3种评估系统间物理相似特性的指标。基于MONK连续能量下敏感性计算结果,编制了与其耦合的相似性分析程序,将分析程序的计算结果与TSUNAMI进行比较,结果显示符合良好。对两个主要相似性指标Ck和E大于0.95、大于0.9、大于0.8 3种情况进行了分析,结果显示,系统间的相似性指标大于0.9才能保证足够的相似性。以铅铋快堆为目标堆型,采用相似性分析方法对其进行了零功率堆物理方案的设计。

Zero power reactor experiment is an indispensable stage for the design of new reactor.In order to scientifically assess the similarity of physical characteristics between systems,three indexes were introduced to evaluate the physical similarity between systems based on the sensitivity and uncertainty analysis techniques.Based on the results of MONK sensitivity calculation under continuous energy,a similarity analysis program was developed.And then the results of the program were compared with those of TSUNAMI and showed good agreement.The two main similarity indexes C k and E were analyzed when greater than 0.95,greater than 0.9 and greater than 0.8.The results show that the similarity indexes between systems need to be greater than 0.9 to ensure adequate verification potency or similarity.Taking the Pb-Bi fast reactor as the target reactor type,the zero power reactor physical design was carried out using the similarity analysis method.