Fast Vector Computation of the Characteristics Method

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概要

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• Two numerical algorithms, an odd-even sweep (OES) method and an independent sequential sweep (ISS) method, for the fast neutron transport computation by the characteristics method on vector computers have been developed. The neutron tracking procedure is based on the newly devised vectorized sweeps with long vector length, which enables efficient vector processing in comparison with the ordinary forward sweep. Numerical tests have been done on FUJITSU FACOM VPP-5000 for a realistic PWR fuel assembly. The results show that the vector computation with either of the two methods reduces the computation times to one-fifteenth comparing with the scalar computation. Of the two methods, the ISS method is recommended, because the ISS method gives faster convergence and requires smaller memory size than the OES method.

• 一般社団法人 日本原子力学会の論文
• 2002-03-25

著者

• Kugo Teruhiko

  Department Of Nuclear Energy System Japan Atomic Energy Research Institute

関連論文

• Fast Vector Computation of the Characteristics Method

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