Uncertainties Analysis on the Prediction of Flow and Heat Transfer of Liquid Sodium with CFD Technology
The prediction of flow and heat transfer characteristics of liquid sodium with CFD technology is of significant importance for the design and safety analysis of sodium-cooled fast reactor. The accuracies and uncertainties of the CFD models should be evaluated to improve the confidence of the numeric...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2020/4239143 |
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| author | Zhanwei Liu Xinyu Li Tenglong Cong Rui Zhang Lingyun Zheng Hang Deng Yuning Cui |
| author_facet | Zhanwei Liu Xinyu Li Tenglong Cong Rui Zhang Lingyun Zheng Hang Deng Yuning Cui |
| author_sort | Zhanwei Liu |
| collection | DOAJ |
| description | The prediction of flow and heat transfer characteristics of liquid sodium with CFD technology is of significant importance for the design and safety analysis of sodium-cooled fast reactor. The accuracies and uncertainties of the CFD models should be evaluated to improve the confidence of the numerical results. In this work, the uncertainties from the turbulent model, boundary conditions, and physical properties for the flow and heat transfer of liquid sodium were evaluated against the experimental data. The results of uncertainty quantization show that the maximum uncertainties of the Nusselt number and friction coefficient occurred in the transition zone from the inlet to the fully developed region in the circular tube, while they occurred near the reattachment point in the backward-facing step. Furthermore, in backward-facing step flow, the maximum uncertainty of temperature migrated from the heating wall to the geometric center of the channel, while the maximum uncertainty of velocity occurred near the vortex zone. The results of sensitivity analysis illustrate that the Nusselt number was negatively correlated with the thermal conductivity and turbulent Prandtl number, while the friction coefficient was positively correlated with the density and Von Karman constant. This work can be a reference to evaluate the accuracy of the standard k-ε model in predicting the flow and heat transfer characteristics of liquid sodium. |
| format | Article |
| id | doaj-art-a1d643b767a844e4bbffe9eb43410af8 |
| institution | Kabale University |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-a1d643b767a844e4bbffe9eb43410af82025-02-03T06:46:08ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832020-01-01202010.1155/2020/42391434239143Uncertainties Analysis on the Prediction of Flow and Heat Transfer of Liquid Sodium with CFD TechnologyZhanwei Liu0Xinyu Li1Tenglong Cong2Rui Zhang3Lingyun Zheng4Hang Deng5Yuning Cui6College of Nuclear Science and Technology, Harbin Engineering University, Harbin, ChinaCollege of Nuclear Science and Technology, Harbin Engineering University, Harbin, ChinaCollege of Nuclear Science and Technology, Harbin Engineering University, Harbin, ChinaCollege of Nuclear Science and Technology, Harbin Engineering University, Harbin, ChinaCollege of Nuclear Science and Technology, Harbin Engineering University, Harbin, ChinaCollege of Nuclear Science and Technology, Harbin Engineering University, Harbin, ChinaSchool of Statistics, Shandong University of Finance and Economics, Jinan, ChinaThe prediction of flow and heat transfer characteristics of liquid sodium with CFD technology is of significant importance for the design and safety analysis of sodium-cooled fast reactor. The accuracies and uncertainties of the CFD models should be evaluated to improve the confidence of the numerical results. In this work, the uncertainties from the turbulent model, boundary conditions, and physical properties for the flow and heat transfer of liquid sodium were evaluated against the experimental data. The results of uncertainty quantization show that the maximum uncertainties of the Nusselt number and friction coefficient occurred in the transition zone from the inlet to the fully developed region in the circular tube, while they occurred near the reattachment point in the backward-facing step. Furthermore, in backward-facing step flow, the maximum uncertainty of temperature migrated from the heating wall to the geometric center of the channel, while the maximum uncertainty of velocity occurred near the vortex zone. The results of sensitivity analysis illustrate that the Nusselt number was negatively correlated with the thermal conductivity and turbulent Prandtl number, while the friction coefficient was positively correlated with the density and Von Karman constant. This work can be a reference to evaluate the accuracy of the standard k-ε model in predicting the flow and heat transfer characteristics of liquid sodium.http://dx.doi.org/10.1155/2020/4239143 |
| spellingShingle | Zhanwei Liu Xinyu Li Tenglong Cong Rui Zhang Lingyun Zheng Hang Deng Yuning Cui Uncertainties Analysis on the Prediction of Flow and Heat Transfer of Liquid Sodium with CFD Technology Science and Technology of Nuclear Installations |
| title | Uncertainties Analysis on the Prediction of Flow and Heat Transfer of Liquid Sodium with CFD Technology |
| title_full | Uncertainties Analysis on the Prediction of Flow and Heat Transfer of Liquid Sodium with CFD Technology |
| title_fullStr | Uncertainties Analysis on the Prediction of Flow and Heat Transfer of Liquid Sodium with CFD Technology |
| title_full_unstemmed | Uncertainties Analysis on the Prediction of Flow and Heat Transfer of Liquid Sodium with CFD Technology |
| title_short | Uncertainties Analysis on the Prediction of Flow and Heat Transfer of Liquid Sodium with CFD Technology |
| title_sort | uncertainties analysis on the prediction of flow and heat transfer of liquid sodium with cfd technology |
| url | http://dx.doi.org/10.1155/2020/4239143 |
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