• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>PHYSOR 2004 - the physics of fuel cycles and advanced nuclear systems: global developments >Methodologies for Treatment of Spectral Effects at Core-Reflector Interfaces in Fast Neutron Systems
【24h】

Methodologies for Treatment of Spectral Effects at Core-Reflector Interfaces in Fast Neutron Systems

机译：快速中子系统中核心反射层界面光谱效应的处理方法

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The existence of space, angle and energy neutron flux distribution transients isrna well known phenomenon which makes the calculation of fast reactors difficultrnwhen the core is surrounded by reflectors, particularly steel reflectors. The currentrninterest for fast neutron reactors as TRU burners of relatively low power and smallrncore size (high leakage) motivates the search for an accurate deterministicrntreatment of neutron reflection. Indeed, without due care taken, the treatment ofrnreflector effects can introduce significant uncertainties in Keff and powerrndistribution calculated values.rnWe report here further investigations that we have performed with therndeterministic code system ERANOS2.0 and with the continuous energy MonternCarlo code TRIPOLI-4, in order to understand these effects and converge to arnsatisfactory calculation scheme for ERANOS: our final objective is to define arnrecommended deterministic calculation procedure for an accurate treatment of fastrnreactors neutron balance in the presence of reflectors.rnOur work shows that satisfactory results can be achieved by optimization ofrnthe macrocell option already implemented in the ECCO cell code of ERANOS,rnthe agreement with the Monte Carlo calculation becoming satisfactory even whenrnusing a reduced number of energy groups.
机译：空间，角度和能量中子通量分布瞬态的存在是众所周知的现象，当铁心被反射器（特别是钢制反射器）包围时，快速反应堆的计算变得困难。目前，对快速中子反应堆的兴趣是功率相对较低，堆芯尺寸较小（高泄漏）的TRU燃烧器，促使人们寻求对中子反射进行精确确定性处理。实际上，如果不采取适当的措施，对反射器效应的处理可能会在Keff和功率分布计算值中引入很大的不确定性。我们在此报告，我们已经使用确定性代码系统ERANOS2.0和连续能量MonternCarlo代码TRIPOLI-4进行了进一步的研究，为了了解这些影响并收敛到ERANOS的令人满意的计算方案：我们的最终目标是定义arnrecommended确定性计算程序，以在存在反射器的情况下准确处理快反应堆中子平衡。我们的工作表明，通过优化反应堆可以实现令人满意的结果。宏单元选项已在ERANOS的ECCO单元代码中实现，即使使用减少的能量组，与Monte Carlo计算的协议也变得令人满意。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号