DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Kim, Yong Hee | - |
dc.contributor.advisor | 김용희 | - |
dc.contributor.author | Kim, Woosong | - |
dc.contributor.author | 김우송 | - |
dc.date.accessioned | 2018-05-23T19:36:32Z | - |
dc.date.available | 2018-05-23T19:36:32Z | - |
dc.date.issued | 2017 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=718865&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/241962 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 원자력및양자공학과, 2017.8,[vii, 102 p. :] | - |
dc.description.abstract | This thesis introduces the albedo-corrected parameterized equivalence constants (APEC) method, a new method for correcting the homogenized two-group cross-sections of the PWR fuel assemblies by taking into account the neutron leakage. In order to eliminate the two-group constant error in the conventional homogenization method, the APEC method is proposed, which parameterizes the homogenized two-group cross-sections in terms of an integrated albedo information, current-to-flux ratio (CFR), and a neutron spectrum index defined as the fast-to-thermal flux ratio. Small color-set models are introduced to obtain appropriate CFR boundary conditions for the APEC method and their characteristic features are discussed. The APEC algorithm was implemented into an in-house nodal expansion method code in conjunction with a partial-current CMFD acceleration. The nodal analyses of various benchmark problems based on an SMR initial core and a large PWR core were performed to evaluate the performance of the APEC method. The nodal analyses showed that the APEC method can improve the nodal accuracy significantly with a marginally additional computing cost. In addition, the APEC method can be extended to the functionalization of the discontinuity factors (DFs) and it has been shown that APEC-corrected DFs results in clearly improved nodal solutions. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | leakage-correction▼anodal method▼acurrent-to-flux ratio (CFR)▼aspectral index (SI)▼aequivalence theory | - |
dc.subject | 중성자 누설 보정▼a노달 방법론▼a중성자류 대 중성자속 비율▼a스펙트럼 지수▼a등가이론 | - |
dc.title | Albedo-corrected parameterized equivalence constants for coarse-mesh nodal analysis of nuclear reactors | - |
dc.title.alternative | 소격격자 원자로 해석을 위한 알베도 경계조건 기반 소수군 등가인자 보정방법론 연구 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :원자력및양자공학과, | - |
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