上海交通大学学报

上海交通大学学报（自然版）

• 原子能技术 • 上一篇    下一篇

混合能谱超临界水冷堆多层燃料组件核热性能分析

刘晓晶，杨婷，严勇，程旭   

  1. （上海交通大学 核科学与工程学院， 上海 200240）
  • 收稿日期:2009-04-14 修回日期:1900-01-01 出版日期:2010-01-29 发布日期:2010-01-29

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

LIU Xiaojing，YANG Ting，YAN Yong，CHENG Xu   

  1. (School of Nuclear Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2009-04-14 Revised:1900-01-01 Online:2010-01-29 Published:2010-01-29

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.

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

Abstract:

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.

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