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...

Descripción completa

Detalles Bibliográficos
Autores principales: Tan, Xuefeng, Wang, Bing, Guo, Yun, Hu, Miao
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