华电技术 ›› 2017, Vol. 39 ›› Issue (2): 16-19.

• 研究与开发 • 上一篇    下一篇

基于MCNP程序的压水堆不同方式换料后反应堆物理分析

  

  1. 华北水利水电大学  电力学院,郑州〓450045
  • 出版日期:2017-02-25 发布日期:2017-04-21

Physical analysis of reactor different refueling methods based on MCNP pressurized water reactor

  1. North China University of Water Resources and Electric Power School of Electric Power, Zhengzhou 450045, China
  • Online:2017-02-25 Published:2017-04-21

摘要:

换料方式对反应堆的经济性与安全性起着至关重要的作用。运用蒙特卡罗方法中的MCNP程序建立35MW小型反应堆物理模型,为燃料元件、冷却剂、堆芯构件、反射层建立了精确的物理计算模型,并对换料后此堆芯的有效增殖因子(keff)、中子能量分布及中子径向通量密度分布等物理量进行计算,同时着重分析计算堆芯功率密度分布。绘制堆芯功率密度分布三维图,总结功率密度分布规律。通过一系列的物理计算以及对数据的归纳总结,为堆芯的物理优化以及换料方式对展平堆芯功率所起到的作用提供了依据。

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Abstract:

Refueling method is essential for the economy and safety of reactor. By Monte Carlo method, physical model of miniature reactor was built by MCNP software. Accurate physical calculating model of fuel, coolant, reactor core and reflector were built accordingly. The effective valueadded of refueling after the core factor keff, neutron energy distribution and neutron flux density radial distribution of physical quantity calculation, analysis and calculation at the same time focus on core power density distribution. Draw up the core power density distribution of threedimensional figure, summarizes the power density distribution. By a series physical calculation and summarization of data, the reference for reactor core improvement and effect of refueling method for reactor core power was indicated.

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