DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cho, Bumhee | ko |
dc.contributor.author | Cho, Nam Zin | ko |
dc.date.accessioned | 2016-04-20T06:15:38Z | - |
dc.date.available | 2016-04-20T06:15:38Z | - |
dc.date.created | 2015-10-13 | - |
dc.date.created | 2015-10-13 | - |
dc.date.issued | 2015-11 | - |
dc.identifier.citation | ANNALS OF NUCLEAR ENERGY, v.85, pp.937 - 957 | - |
dc.identifier.issn | 0306-4549 | - |
dc.identifier.uri | http://hdl.handle.net/10203/205210 | - |
dc.description.abstract | As modern computing power grows, whole-core transport calculations become more viable. However, the computing time and memory requirement remain major burdens. As a candidate for whole-core transport calculation methods, nonoverlapping local/global (NLG) iteration has recently been developed. In this study, the NLG iteration method is extended to make it capable of transient calculations of 3-D heterogeneous problems. It is then implemented in an in-house code, CRX-2K. Transient NLG iteration uses the 2-D/1-D fusion method as a local transport kernel, with the transient p-CMFD equation adopted as a global wrapper. In addition, a neighboring spectral index (NSI) weighting method is suggested as a tool for correcting the rod cusping phenomenon for rod ejection problems. Four problems, including a 3-D heterogeneous problem, are computed. Numerical results show that the NLG iteration converges to the reference solution obtained by means of the whole-core p-CMFD acceleration, and the NSI weighting method is accurate to correct the rod cusping phenomenon. The NLG iteration in present implementation takes more computing times (still less than 2 times) than the whole-core p-CMFD acceleration, but has great potential in parallelization. | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | EQUATIONS | - |
dc.title | A nonoverlapping local/global iterative method with 2-D/1-D fusion transport kernel and p-CMFD wrapper for transient reactor analysis | - |
dc.type | Article | - |
dc.identifier.wosid | 000361413800101 | - |
dc.identifier.scopusid | 2-s2.0-84952324428 | - |
dc.type.rims | ART | - |
dc.citation.volume | 85 | - |
dc.citation.beginningpage | 937 | - |
dc.citation.endingpage | 957 | - |
dc.citation.publicationname | ANNALS OF NUCLEAR ENERGY | - |
dc.identifier.doi | 10.1016/j.anucene.2015.07.012 | - |
dc.contributor.localauthor | Cho, Nam Zin | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Nonoverlapping local/global (NLG) iteration | - |
dc.subject.keywordAuthor | 2-D/1-D fusion method | - |
dc.subject.keywordAuthor | p-CMFD | - |
dc.subject.keywordAuthor | 3-D transient transport | - |
dc.subject.keywordAuthor | Rod cusping | - |
dc.subject.keywordAuthor | Neighboring spectral index (NSI) weighting method | - |
dc.subject.keywordPlus | EQUATIONS | - |
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