BROWSE

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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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A New Equivalence theory Method for Treating Doubly Heterogeneous Fuel? II: Verifications

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dc.contributor.author Lee, Deokjung ko
dc.contributor.author Choi, Sooyoung ko
dc.contributor.author Williams, Mark L. ko
dc.contributor.author Kong, Chidong ko
dc.date.available 2014-12-22T00:06:29Z -
dc.date.created 2014-12-19 ko
dc.date.issued 2015-05 ko
dc.identifier.citation NUCLEAR SCIENCE AND ENGINEERING, v.180, no.1, pp.41 - 57 ko
dc.identifier.issn 0029-5639 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/9523 -
dc.description.abstract A new methodology has been developed recently to treat resonance self-shielding in systems for which the fuel compact region of a reactor lattice consists of small fuel grains dispersed in a graphite matrix. The theoretical development adopts equivalence theory in both micro- and macro-level heterogeneities to provide approximate analytical expressions for the shielded cross sections, which may be interpolated from a table of resonance integrals or Bondarenko factors using a modified background cross section as the interpolation parameter. This paper describes the first implementation of the theoretical equations in a reactor analysis code. To reduce discrepancies caused by use of the rational approximation for collision probabilities in the original derivation, a new formulation for a doubly heterogeneous Bell factor is developed in this paper to improve the accuracy of doubly heterogeneous expressions. The methodology is applied to a wide range of pin cell and assembly test problems with varying geometry parameters, material compositions, and temperatures, and the results are compared with continuous-energy Monte Carlo simulations to establish the accuracy and range of applicability of the new approach. It is shown that the new doubly heterogeneous self-shielding method including the Bell factor correction gives good agreement with reference Monte Carlo results. ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher AMER NUCLEAR SOC ko
dc.title A New Equivalence theory Method for Treating Doubly Heterogeneous Fuel? II: Verifications ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84931824844 ko
dc.identifier.wosid 000353931800003 ko
dc.type.rims ART ko
dc.identifier.doi 10.13182/NSE14-72 ko
dc.identifier.url http://www.ans.org/pubs/journals/nse/a_37006 ko
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