Transport Calculations of MOX and UO_2 Pin Cells by the Method of Characteristics

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A new transport theory code for two-dimensional calculations of both square and hexagonal fuel lattices by the method of characteristics has been developed. The ray tracing procedure is based on the macroband method, which permits more accurate spatial integration in comparison to the equidistant method of tracing. The neutron source within each region is approximated by a linear function and linearly anisotropic scattering can be optionally accounted for. Efficient new techniques for both azimuthal and polar integration are presented. The spatial discretization problem in case of P<SUB>1</SUB>-scattering has been studied. Detailed analyses show that the P<SUB>1</SUB>-scattering in case of regular infinite array of fuel cells is significant, especially for MOX fuel, while the transport correction is inadequate in case of real geometry multi-group calculations. Finally, the complicated nature of the angular flux in MOX and UO<SUB>2</SUB> fuel cells is demonstrated.

収録刊行物

  • Journal of nuclear science and technology  

    Journal of nuclear science and technology 35(12), 874-885, 1998-12-25 

    Atomic Energy Society of Japan

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被引用文献:  7件

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各種コード

  • NII論文ID(NAID)
    10002080515
  • NII書誌ID(NCID)
    AA00703720
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00223131
  • NDL 記事登録ID
    4629720
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A460
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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