Cargando…
Numerical Investigation of Special Heat Transfer Phenomenon in Wire-Wrapped Fuel Rod of SFR
Sodium-cooled reactors (SFR) have always been recognized as one of the most promising candidates for the fourth-generation nuclear systems as announced by the Generation-IV International Forum. In the design of SFR, helical wire-wrapped rod is applied to stabilize the structure of the rod bundle and...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9229251/ https://www.ncbi.nlm.nih.gov/pubmed/35744549 http://dx.doi.org/10.3390/mi13060935 |
_version_ | 1784734696023785472 |
---|---|
author | Tan, Xuefeng Wang, Bing Guo, Yun Hu, Miao |
author_facet | Tan, Xuefeng Wang, Bing Guo, Yun Hu, Miao |
author_sort | Tan, Xuefeng |
collection | PubMed |
description | Sodium-cooled reactors (SFR) have always been recognized as one of the most promising candidates for the fourth-generation nuclear systems as announced by the Generation-IV International Forum. In the design of SFR, helical wire-wrapped rod is applied to stabilize the structure of the rod bundle and enhance coolant mixing. Although there has been considerable research on SFR in computational fluid dynamics (CFD), the phenomenon of heat transfer has rarely been paid attention to. This article discovered that there exists reversed heat flux from coolant to wrapped wire, which is contrary to our usual understanding. This phenomenon has not been reported in previous CFD calculations. Hence, a solid heat conduction model is proposed to prove this phenomenon and analyze the heat transfer process. The simulation results show that the wrapping wire embedding depth, the shape of the calculation domain and the physical properties of all components have great influence on the magnitude of the reversed heat flux. The present findings will have strong influence on the temperature field and maximum value of the fuel rod as well as profound reference value for future flow calculation, especially in grid generation and treatment of the junction between the winding wire and fuel rod. |
format | Online Article Text |
id | pubmed-9229251 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-92292512022-06-25 Numerical Investigation of Special Heat Transfer Phenomenon in Wire-Wrapped Fuel Rod of SFR Tan, Xuefeng Wang, Bing Guo, Yun Hu, Miao Micromachines (Basel) Article Sodium-cooled reactors (SFR) have always been recognized as one of the most promising candidates for the fourth-generation nuclear systems as announced by the Generation-IV International Forum. In the design of SFR, helical wire-wrapped rod is applied to stabilize the structure of the rod bundle and enhance coolant mixing. Although there has been considerable research on SFR in computational fluid dynamics (CFD), the phenomenon of heat transfer has rarely been paid attention to. This article discovered that there exists reversed heat flux from coolant to wrapped wire, which is contrary to our usual understanding. This phenomenon has not been reported in previous CFD calculations. Hence, a solid heat conduction model is proposed to prove this phenomenon and analyze the heat transfer process. The simulation results show that the wrapping wire embedding depth, the shape of the calculation domain and the physical properties of all components have great influence on the magnitude of the reversed heat flux. The present findings will have strong influence on the temperature field and maximum value of the fuel rod as well as profound reference value for future flow calculation, especially in grid generation and treatment of the junction between the winding wire and fuel rod. MDPI 2022-06-11 /pmc/articles/PMC9229251/ /pubmed/35744549 http://dx.doi.org/10.3390/mi13060935 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Tan, Xuefeng Wang, Bing Guo, Yun Hu, Miao Numerical Investigation of Special Heat Transfer Phenomenon in Wire-Wrapped Fuel Rod of SFR |
title | Numerical Investigation of Special Heat Transfer Phenomenon in Wire-Wrapped Fuel Rod of SFR |
title_full | Numerical Investigation of Special Heat Transfer Phenomenon in Wire-Wrapped Fuel Rod of SFR |
title_fullStr | Numerical Investigation of Special Heat Transfer Phenomenon in Wire-Wrapped Fuel Rod of SFR |
title_full_unstemmed | Numerical Investigation of Special Heat Transfer Phenomenon in Wire-Wrapped Fuel Rod of SFR |
title_short | Numerical Investigation of Special Heat Transfer Phenomenon in Wire-Wrapped Fuel Rod of SFR |
title_sort | numerical investigation of special heat transfer phenomenon in wire-wrapped fuel rod of sfr |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9229251/ https://www.ncbi.nlm.nih.gov/pubmed/35744549 http://dx.doi.org/10.3390/mi13060935 |
work_keys_str_mv | AT tanxuefeng numericalinvestigationofspecialheattransferphenomenoninwirewrappedfuelrodofsfr AT wangbing numericalinvestigationofspecialheattransferphenomenoninwirewrappedfuelrodofsfr AT guoyun numericalinvestigationofspecialheattransferphenomenoninwirewrappedfuelrodofsfr AT humiao numericalinvestigationofspecialheattransferphenomenoninwirewrappedfuelrodofsfr |