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Neutron transport model based on the transmission probability method

机译：基于传输概率法的中子输运模型

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摘要

A new project has been started recently at KIT to develop a code able to treat hexagonal-z geometries with low density regions. The mathematical method chosen for that purpose is the Transmission Probability Method (TPM) for solving the integral neutron transport equation. In this model, one hexagonal prism is divided into six or more triangular prisms in order to get accurate flux distributions. Within each triangular prism, the neutron source is assumed to be isotropic, the scalar flux and source being approximated in space with a set of second order orthogonal polynomials. The neutron flux at the interfaces is constant in space and approximated with the simplified P_1 approximation in angle. A new code, TPM-HEXZ, based on the described model is developed and some benchmarks are used to verify the code, the results are in good agreement with reference ones.
机译：KIT最近开始了一个新项目，以开发一种能够处理低密度区域的六角形-z几何形状的代码。为此目的选择的数学方法是用于求解积分中子输运方程的传输概率方法（TPM）。在此模型中，一个六边形棱镜被分成六个或更多的三角棱镜，以便获得准确的光通量分布。在每个三角棱镜中，假定中子源是各向同性的，标量通量和源在空间中使用一组二阶正交多项式近似。界面处的中子通量在空间中是恒定的，并以简化的P_1角度近似。基于所描述的模型开发了新代码TPM-HEXZ，并使用一些基准测试来验证代码，结果与参考代码吻合良好。

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  • 来源
    《Energy Conversion & Management》 |2013年第8期|33-38|共6页
  • 作者

    Kunpeng Wang; Andrei Rineiski; Werner Maschek; Hongchun Wu; Liangzhi Cao;

  • 作者单位

    Karlsruhe Institute of Technology (KIT), Campus North, D-76344 Eggenstein-Leopoldshafen, Hermann-von-HetmhoItz-Platz 1. Germany,School of Nuclear Science and Technology, Xi'an jiaotong University, Xi'an 710049, China;

    Karlsruhe Institute of Technology (KIT), Campus North, D-76344 Eggenstein-Leopoldshafen, Hermann-von-HetmhoItz-Platz 1. Germany;

    Karlsruhe Institute of Technology (KIT), Campus North, D-76344 Eggenstein-Leopoldshafen, Hermann-von-HetmhoItz-Platz 1. Germany;

    School of Nuclear Science and Technology, Xi'an jiaotong University, Xi'an 710049, China;

    School of Nuclear Science and Technology, Xi'an jiaotong University, Xi'an 710049, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Neutron transport; Integral transport equation; Transmission Probability Method (TPM); Low density region;

    机译：中子运输;积分输运方程传输概率法（TPM）;低密度区域;

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