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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 40 | - |
dc.citation.number | 10 | - |
dc.citation.startPage | 30 | - |
dc.citation.title | NUCLEAR SCIENCE AND ENGINEERING | - |
dc.citation.volume | 180 | - |
dc.contributor.author | Lee, Deokjung | - |
dc.contributor.author | Williams, Mark L. | - |
dc.contributor.author | Choi, Sooyoung | - |
dc.date.accessioned | 2023-12-22T01:16:48Z | - |
dc.date.available | 2023-12-22T01:16:48Z | - |
dc.date.created | 2014-12-19 | - |
dc.date.issued | 2015-05 | - |
dc.description.abstract | A new methodology has been developed to treat resonance self-shielding in doubly heterogeneous very high temperature gas-cooled reactor systems in which the fuel compact region of a reactor lattice consists of small fuel grains dispersed in a graphite matrix. The new method first homogenizes the fuel grain and matrix materials using an analytically derived disadvantage factor from a two-region problem with equivalence theory and intermediate resonance method. The disadvantage factor accounts for spatial self-shielding effects inside each grain within the framework of an infinite array of grains. Then the homogenized fuel compact is self-shielded using a Bondarenko method to account for interactions between the fuel compact regions in the fuel lattice. In the final form of the equations for actual implementations, the double-heterogeneity effects are accounted for by simply using a modified definition of a background cross section, which includes geometry parameters and cross sections for both the grain and fuel compact regions. With the new method, the doubly heterogeneous resonance self-shielding effect can be treated easily even with legacy codes programmed only for a singly heterogeneous system by simple modifications in the background cross section for resonance integral interpolations. This paper presents a detailed derivation of the new method and a sensitivity study of double-heterogeneity parameters introduced during the derivation. The implementation of the method and verification results for various test cases are presented in the companion paper | - |
dc.identifier.bibliographicCitation | NUCLEAR SCIENCE AND ENGINEERING, v.180, no.10, pp.30 - 40 | - |
dc.identifier.doi | 10.13182/NSE14-68 | - |
dc.identifier.issn | 0029-5639 | - |
dc.identifier.scopusid | 2-s2.0-84931835403 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/9526 | - |
dc.identifier.url | http://www.ans.org/pubs/journals/nse/a_36950 | - |
dc.identifier.wosid | 000353931800002 | - |
dc.language | 영어 | - |
dc.publisher | AMER NUCLEAR SOC | - |
dc.title | A New Equivalence theory Method for Treating Doubly Heterogeneous Fuel ? I: Theory | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Nuclear Science & Technology | - |
dc.relation.journalResearchArea | Nuclear Science & Technology | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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