DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Kyunghoon | ko |
dc.contributor.author | Kim, Woosong | ko |
dc.contributor.author | Kim, Yonghee | ko |
dc.date.accessioned | 2023-07-25T12:00:43Z | - |
dc.date.available | 2023-07-25T12:00:43Z | - |
dc.date.created | 2023-07-07 | - |
dc.date.issued | 2018-04 | - |
dc.identifier.citation | 2018 International Conference on Physics of Reactors: Reactor Physics Paving the Way Towards More Efficient Systems, PHYSOR 2018, pp.1916 - 1927 | - |
dc.identifier.uri | http://hdl.handle.net/10203/310810 | - |
dc.description.abstract | A new method for correcting the homogenized two-group cross sections (XSs) by taking into account the neutron leakage, which is named the albedo-corrected parameterized equivalence constants (APEC) method, has been developed to reduce the two-group XS error in the conventional homogenization method. In the APEC method, the homogenized two-group XSs generated from several color-set calculations as well as a single fuel assembly (FA) calculation are parameterized in terms of an integrated albedo information current-to-flux ratio (CFR). In addition, the neutron spectrum change in an FA can be considered by introducing a spectral index (SI) defined as the fast-to-thermal flux ratio. In our previous study, the new method was implemented into an in-house nodal code and its performance was tested only for benchmark problems based on the initial core state. The results demonstrate that the nodal accuracy can be improved significantly with a small amount of additional computing cost. In this paper, the APEC method is implemented into the practical nuclear design code MASTER, and validation is performed with two-dimensional problems based not only on the fresh state but also the burned condition of a small modular reactor (SMR) core. It was verified that the APEC XS corrections can lead to a noticeable improvement in the nodal accuracy of the fresh core, while relatively marginal in the depleted core. | - |
dc.language | English | - |
dc.publisher | Sociedad Nuclear Mexicana, A.C. | - |
dc.title | Nodal cross section corrections with the apec method in an SMR core analysis | - |
dc.type | Conference | - |
dc.identifier.scopusid | 2-s2.0-85106201968 | - |
dc.type.rims | CONF | - |
dc.citation.beginningpage | 1916 | - |
dc.citation.endingpage | 1927 | - |
dc.citation.publicationname | 2018 International Conference on Physics of Reactors: Reactor Physics Paving the Way Towards More Efficient Systems, PHYSOR 2018 | - |
dc.identifier.conferencecountry | MX | - |
dc.identifier.conferencelocation | Cancun | - |
dc.contributor.localauthor | Kim, Yonghee | - |
dc.contributor.nonIdAuthor | Lee, Kyunghoon | - |
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