Numerical simulation of natural convection and heat transfer in a molten pool with embedded cooling tubes
This study described the natural circulation and heat transfer of a molten pool in a specifically designed core catcher conceived for a pressurized water reactor. In addition to external cooling, the core catcher features internal cooling tubes embedded in the molten pool. To investigate the coolabi...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-09-01
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| Series: | Frontiers in Energy Research |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2022.892592/full |
| _version_ | 1818017509125652480 |
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| author | Li Zhang Pengya Guo Yidan Yuan Yangyang Liang Yong Guo Wei Li Qiang Guo Weimin Ma |
| author_facet | Li Zhang Pengya Guo Yidan Yuan Yangyang Liang Yong Guo Wei Li Qiang Guo Weimin Ma |
| author_sort | Li Zhang |
| collection | DOAJ |
| description | This study described the natural circulation and heat transfer of a molten pool in a specifically designed core catcher conceived for a pressurized water reactor. In addition to external cooling, the core catcher features internal cooling tubes embedded in the molten pool. To investigate the coolability in such a configuration, first, a full-scale core catcher simulation is conducted to give a preliminary study under a real SA situation. Results illustrated that cooling efficiency can be remarkably enhanced due to the inner tubes. Then a test facility of the 2D slice with the geometrical scaled factor of 1:4 has been developed, and molten salt (NaNO3–KNO3) experiments will be implemented in the near future. This study also performed a pre-test simulation using molten NaNO3–KNO3 as a stimulant to study the heat transfer and flow characteristics of the salt pool. The melt convection in the test section was represented by a two-dimensional mesh with a WMLES turbulence model using the FLUENT code. The simulation captured the heat transfer enhancement by the cooling tubes as expected, and the results would help decide the proper test matrix and improvement of instrumentation required to obtain the necessary data for code validation. |
| first_indexed | 2024-04-14T07:28:59Z |
| format | Article |
| id | doaj.art-2778e4b689714c2499cc7ae88f70c99a |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-04-14T07:28:59Z |
| publishDate | 2022-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-2778e4b689714c2499cc7ae88f70c99a2022-12-22T02:05:56ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2022-09-011010.3389/fenrg.2022.892592892592Numerical simulation of natural convection and heat transfer in a molten pool with embedded cooling tubesLi Zhang0Pengya Guo1Yidan Yuan2Yangyang Liang3Yong Guo4Wei Li5Qiang Guo6Weimin Ma7China Nuclear Power Engineering Co, LTD, Beijing, ChinaChina Nuclear Power Engineering Co, LTD, Beijing, ChinaChina Nuclear Power Engineering Co, LTD, Beijing, ChinaChina Nuclear Power Engineering Co, LTD, Beijing, ChinaChina Nuclear Power Engineering Co, LTD, Beijing, ChinaChina Nuclear Power Engineering Co, LTD, Beijing, ChinaChina Nuclear Power Engineering Co, LTD, Beijing, ChinaRoyal Institute of Technology (KTH), Stockholm, SwedenThis study described the natural circulation and heat transfer of a molten pool in a specifically designed core catcher conceived for a pressurized water reactor. In addition to external cooling, the core catcher features internal cooling tubes embedded in the molten pool. To investigate the coolability in such a configuration, first, a full-scale core catcher simulation is conducted to give a preliminary study under a real SA situation. Results illustrated that cooling efficiency can be remarkably enhanced due to the inner tubes. Then a test facility of the 2D slice with the geometrical scaled factor of 1:4 has been developed, and molten salt (NaNO3–KNO3) experiments will be implemented in the near future. This study also performed a pre-test simulation using molten NaNO3–KNO3 as a stimulant to study the heat transfer and flow characteristics of the salt pool. The melt convection in the test section was represented by a two-dimensional mesh with a WMLES turbulence model using the FLUENT code. The simulation captured the heat transfer enhancement by the cooling tubes as expected, and the results would help decide the proper test matrix and improvement of instrumentation required to obtain the necessary data for code validation.https://www.frontiersin.org/articles/10.3389/fenrg.2022.892592/fullsevere accidentmolten poolcoolabilitycore catchersimulation |
| spellingShingle | Li Zhang Pengya Guo Yidan Yuan Yangyang Liang Yong Guo Wei Li Qiang Guo Weimin Ma Numerical simulation of natural convection and heat transfer in a molten pool with embedded cooling tubes Frontiers in Energy Research severe accident molten pool coolability core catcher simulation |
| title | Numerical simulation of natural convection and heat transfer in a molten pool with embedded cooling tubes |
| title_full | Numerical simulation of natural convection and heat transfer in a molten pool with embedded cooling tubes |
| title_fullStr | Numerical simulation of natural convection and heat transfer in a molten pool with embedded cooling tubes |
| title_full_unstemmed | Numerical simulation of natural convection and heat transfer in a molten pool with embedded cooling tubes |
| title_short | Numerical simulation of natural convection and heat transfer in a molten pool with embedded cooling tubes |
| title_sort | numerical simulation of natural convection and heat transfer in a molten pool with embedded cooling tubes |
| topic | severe accident molten pool coolability core catcher simulation |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2022.892592/full |
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