华电技术 ›› 2016, Vol. 38 ›› Issue (1): 1-4.

• 研究与开发 •    下一篇

有限元方法应用 于一维屏蔽计算的研究

  

  1. 华北电力大学 核科学与工程学院, 北京 102206
  • 出版日期:2016-01-25

Research of one dimensional shielding calculationusing finite element method

  1. School of Nuclear Science and Engineering,North China Electric Power University,Beijing 102206China
  • Published:2016-01-25

摘要:

摘要:应用确定论方法,对一维平板及一维球的屏蔽计算进行了研究,采用离散有限元方法开发出一维稳态中子输运计算程序DONTRAN1D。在处理模型边界条件时,提出设置虚拟点的方法。对负通量除采用置零修正外,还使用输运方程进行中子平衡计算。 最后应用该程序进行算例验证, 并与国际上成熟的程序进行比较分析,求解精度能得到很好的保证。同时,程序中还保留了大量功能模块接口,便于以后继续开发之用。

关键词: 关键词:一维, 屏蔽计算, 有限元, 中子输运

Abstract:

Abstract:In this paper,the shielding calculations of one dimensional plate and one dimensional sphericity using deterministic method were studied and a one dimensional steady state neutron transport calculation program DONTRAN1D using discrete S N finite element method (FEM) was developed.In the calculations,a virtual point setting method was proposed when processing the model boundary conditions.In addition,a zeroing modification and a neutron balance calculation using transporte quation were adopted for negative flux.At last,a comparative analysis was conducted between DONTRAN1D and other mature program in the world using calculation examples.The results show that the
solving accuracy of DONTRAN1D could be guaranteed well.Besides that,a mount of functional module interfaces were reserved for future development in DONTRAN1D program.

Key words: Keywords:one dimension, shielding calculation, finite element method, neutron transport calculation