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Lee, Deokjung
Computational Reactor physics & Experiment lab (CORE Lab)
Research Interests
  • Reactor Analysis computer codes development
  • Methodology development of reactor physics
  • Nuclear reactor design(SM-SFR,PWR and MSR)

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Impact of inflow transport approximation on light water reactor analysis

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Title
Impact of inflow transport approximation on light water reactor analysis
Author
Choi, SooyoungSmith, KordLee, Hyun ChulLee, Deokjung
Issue Date
2015-10
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Citation
JOURNAL OF COMPUTATIONAL PHYSICS, v.299, pp.352 - 373
Abstract
The impact of the inflow transport approximation on light water reactor analysis is investigated, and it is verified that the inflow transport approximation significantly improves the accuracy of the transport and transport/diffusion solutions. A methodology for an inflow transport approximation is implemented in order to generate an accurate transport cross section. The inflow transport approximation is compared to the conventional methods, which are the consistent-PN</inf> and the outflow transport approximations. The three transport approximations are implemented in the lattice physics code STREAM, and verification is performed for various verification problems in order to investigate their effects and accuracy. From the verification, it is noted that the consistent-PN</inf> and the outflow transport approximations cause significant error in calculating the eigenvalue and the power distribution. The inflow transport approximation shows very accurate and precise results for the verification problems. The inflow transport approximation shows significant improvements not only for the high leakage problem but also for practical large core problem analyses.
URI
https://scholarworks.unist.ac.kr/handle/201301/16567
URL
http://www.sciencedirect.com/science/article/pii/S0021999115004507
DOI
10.1016/j.jcp.2015.07.005
ISSN
0021-9991
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