DC Field | Value | Language |
---|---|---|
dc.contributor.author | Wang, Sicheng | ko |
dc.contributor.author | Kim, Yonghee | ko |
dc.contributor.author | Li, Yunzhao | ko |
dc.contributor.author | Cao, Liangzhi | ko |
dc.date.accessioned | 2024-09-27T08:00:09Z | - |
dc.date.available | 2024-09-27T08:00:09Z | - |
dc.date.created | 2024-09-27 | - |
dc.date.issued | 2024-05 | - |
dc.identifier.citation | ANNALS OF NUCLEAR ENERGY, v.199 | - |
dc.identifier.issn | 0306-4549 | - |
dc.identifier.uri | http://hdl.handle.net/10203/323283 | - |
dc.description.abstract | In reactor design and safety analysis, the interaction between neutronics and thermal-hydraulics is of significant importance. As an alternative and improved two-step method, the pin -by -pin scheme requires pin-wise thermalhydraulics feedback to improve the resolution of 3D whole-core analysis. In this work, we implement an embedded coupling of the subchannel code START with the whole-core pin -by -pin calculation system NECPBamboo2.0 following the master-slave approach. The 2D lattice code Bamboo-Lattice2.0 in NECP-Bamboo2.0 provides the pin-wise homogenized few-group constants for the coupling system, and the 3D whole-core pinby -pin code Bamboo-Core2.0 is coupled as the master code with a modified MPI-based START. Bamboo-Core2.0 retains its neutronics module and multi-physics coupling strategy. In contrast, START is only embedded as a slave module into the master. Both of them share the same MPI-based parallelism strategy with a block -based domain decomposition approach. Therefore, the coupling code developed in this paper has a high-level global coupling efficiency on a multi -process platform. The data exchange between neutronics and thermal-hydraulics adopts a direct block -to -block model, thus requiring no additional data interface. The coupling code is verified using the VERA#6 3D single-assembly benchmark problem and the mini-core problem based on the VERA#4 benchmark. The numerical results demonstrate that the coupling code possesses good parallel efficiency and computational precision. Compared with the single-channel model, the subchannel model can simulate the mass/momentum/ energy exchange between channels accurately, and thus a more continuous coolant temperature distribution can be obtained. Meanwhile, the subchannel model is also able to reduce the maximum pin-wise coolant temperature, fuel temperature, and power peak, while the eigenvalue can be increased by about 10 pcm for the steadystate problems used for verification in this paper. | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | An embedded coupling design and development of NECP-Bamboo2.0 and START for PWR whole-core pin-by-pin analysis | - |
dc.type | Article | - |
dc.identifier.wosid | 001165116000001 | - |
dc.identifier.scopusid | 2-s2.0-85184151556 | - |
dc.type.rims | ART | - |
dc.citation.volume | 199 | - |
dc.citation.publicationname | ANNALS OF NUCLEAR ENERGY | - |
dc.identifier.doi | 10.1016/j.anucene.2024.110353 | - |
dc.contributor.localauthor | Kim, Yonghee | - |
dc.contributor.nonIdAuthor | Li, Yunzhao | - |
dc.contributor.nonIdAuthor | Cao, Liangzhi | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Subchannel | - |
dc.subject.keywordAuthor | Neutronics and thermal-hydraulics calculation | - |
dc.subject.keywordAuthor | NECP-Bamboo2.0 | - |
dc.subject.keywordAuthor | PWR | - |
dc.subject.keywordAuthor | Pin-by-pin scheme | - |
dc.subject.keywordAuthor | START | - |
dc.subject.keywordPlus | LOCAL SAFETY PARAMETERS | - |
dc.subject.keywordPlus | CODE SYSTEM | - |
dc.subject.keywordPlus | HOMOGENIZATION TECHNIQUES | - |
dc.subject.keywordPlus | ACCELERATION | - |
dc.subject.keywordPlus | DYNSUB | - |
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