한국원자력학회:학술대회논문집 (Proceedings of the Korean Nuclear Society Conference)

한국원자력학회 (Korean Nuclear Society)
권호 표지

Acceleration of the AFEN Method by Two-Node Nonlinear Iteration

  • Moon, Kap-Suk (Korea Advanced Institute of Science and Technology Department of Nuclear Engineering) ;
  • Cho, Nam-Zin (Korea Advanced Institute of Science and Technology Department of Nuclear Engineering) ;
  • Noh, Jae-Man (Korea Advanced Institute of Science and Technology Department of Nuclear Engineering) ;
  • Hong, Ser-Gi (Korea Advanced Institute of Science and Technology Department of Nuclear Engineering)
  • 발행 : 1998.05.01
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초록

A nonlinear iterative scheme developed to reduce the computing time of the AFEN method was tested and applied to two benchmark problems. The new nonlinear method for the AFEN method is based on solving two-node problems and use of two nonlinear correction factors at every interface instead of one factor in the conventional scheme. The use of two correction factors provides higher-order accurate interface noes as well as currents which are used as the boundary conditions of the two-node problem. The numerical results show that this new method gives exactly the same solution as that of the original AEFEN method and the computing time is significantly reduced in comparison with the original AFEN method.

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