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Analysis of Heterogeneous Cores Using SN Code With Discontinuity Factor

[+] Author Affiliations
Jing Zhao, Zhihong Liu, Chunlin Wei, Yongming Hu

Tsinghua University, Beijing, China

Paper No. ICONE22-30165, pp. V003T05A006; 4 pages
doi:10.1115/ICONE22-30165
From:
  • 2014 22nd International Conference on Nuclear Engineering
  • Volume 3: Next Generation Reactors and Advanced Reactors; Nuclear Safety and Security
  • Prague, Czech Republic, July 7–11, 2014
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-4593-6
  • Copyright © 2014 by ASME

abstract

Solving diffusion equations with the equivalence homogenization theory is the common method in reactor neutronics. But for some case, as for stronger absorbers, the diffusion equations will bring great errors and the transport method will be more suitable. The discontinuity factor theory has been successfully used in core diffusion computation programs and effectively reduced the homogenization error. The method of using the discontinuity factor in the transport method were studied. The result shows that higher accuracy was obtained from the discrete ordinates core transport computation program with discontinued factor.

Copyright © 2014 by ASME

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