混合能谱超临界水冷堆多层燃料组件核热性能分析  

Thermal-Hydraulic and Neutronics Analysis for Multi-layerFuel Assemblies of Mixed Spectrum Supercritical Water-cooled Reactor

作　　者：刘晓晶[1] 杨婷[1] 严勇[1] 程旭[1] 

机构地区：[1]上海交通大学核科学与工程学院,上海200240

出　　处：《上海交通大学学报》2010年第1期90-94,共5页Journal of Shanghai Jiaotong University

基　　金：国家重点基础研究发展规划(973)项目(2007CB209804)

摘　　要：针对混合能谱超临界水冷堆所用新型多层燃料组件设计,基于热工子通道与中子物理的耦合计算,对热谱和快谱燃料组件的核热性能进行分析,同时,验证了混合能谱超临界水冷堆多层燃料组件设计方案的可行性.结果表明:热谱多层燃料组件设计可以有效降低局部热管因子,从而降低热谱区燃料棒包壳的最高温度;快谱多层燃料组件设计在保证冷却剂温度反应性系数与燃料温度反应性系数的绝对值较大的同时,可以达到增殖的目的.The thermal hydraulic and neutron-physical performance of the two multi-layer fuel assemblies was investigated with a coupling approach. The results show that the hot channel factor and the maximum cladding temperature in the thermal fuel assembly can be kept significantly below the design limit using the multi-layer concept. A sufficiently large negative temperature reactivity coefficient of coolant and the breeding feature can be achieved in the fast spectrum zone with the multi-layer fuel assembly design. The results obtained so far show that the multi-layer concept is feasible and promising.

关 键 词：超临界水冷堆 混合中子能谱 多层燃料组件 耦合分析 

分 类 号：TL429[核科学技术—核技术及应用]