CDF analysis of the ESFR sub-channel
In this work, the velocity and the temperature of the Sodium coolant inside the ESFR sub-channel were analyzed using CFD codes. Different OpenFOAM solvers with two turbulent models were used to obtain the velocity profile across the sub-channel. Then, the solvers were modified to include the heat tr...
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| Formato: | tesis de maestría |
| Fecha de publicación: | 2020 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/344709 |
| Acesso em linha: | https://hdl.handle.net/2117/344709 |
| Access Level: | acceso abierto |
| Palavra-chave: | Nuclear reactors -- Design and construction Nuclear reactors -- Fluid dynamics -- Data processing European Sodium Fast Reactor Reactors nuclears -- Dinàmica de fluids -- Simulació per ordinador Reactors nuclears -- Disseny i construcció Àrees temàtiques de la UPC::Energies |
| Resumo: | In this work, the velocity and the temperature of the Sodium coolant inside the ESFR sub-channel were analyzed using CFD codes. Different OpenFOAM solvers with two turbulent models were used to obtain the velocity profile across the sub-channel. Then, the solvers were modified to include the heat transfer equation to evaluate the temperature evolution. The velocity profile obtained indicates the formation of a fully developed turbulent flow across the sub-channel and the Sodium bulk temperatures between the sub-channel’s inlet and outlet are in agreement with those reported in literature. Between the turbulent models used, the RAS k-omega SST model was found to be more accurate in accounting for the turbulence in the near wall regions compared to the k- epsilon model which shows an asymmetrical behavior of the turbulent parameters across the sub-channel despite its geometrical symmetry. ANSYS Fluent was also used to simulate the flow of the Sodium coolant inside the sub-channel. In general, the results obtained were in good agreement with the ones obtained from the different OpenFOAM solvers. |
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