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Study on natural convection heat transfer in a closed cavity with hot and cold tubes
Laminar natural convection with a pair of hot and cold tube in a closed cubic cavity is carried out. This configuration can be founded in performance of nuclear power plant containment passive residual heat removal system. The basic government aquations are sloved by means of finite volume method. T...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
SAGE Publications
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10454859/ https://www.ncbi.nlm.nih.gov/pubmed/34128739 http://dx.doi.org/10.1177/00368504211020965 |
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author | Zheng, Jiyu Zhang, Liang Yu, Hai Wang, Yilong Zhao, Tong |
author_facet | Zheng, Jiyu Zhang, Liang Yu, Hai Wang, Yilong Zhao, Tong |
author_sort | Zheng, Jiyu |
collection | PubMed |
description | Laminar natural convection with a pair of hot and cold tube in a closed cubic cavity is carried out. This configuration can be founded in performance of nuclear power plant containment passive residual heat removal system. The basic government aquations are sloved by means of finite volume method. The effect of Ra number (10(3)–10(6)), shape of tube and spatial position on local and mean heat transfer characteristics is studied. It is found that the Nu number increased when raising Ra number. The Nu number is higher when the shapes are circle and triangle. In adddition, it is founded that the heat transfer has a better effect when the cold tube locates above the hot tube among the five spatial positions. The results provides theoretical basis for performance of nuclear power plant containment passive residual heat removal system. |
format | Online Article Text |
id | pubmed-10454859 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | SAGE Publications |
record_format | MEDLINE/PubMed |
spelling | pubmed-104548592023-08-26 Study on natural convection heat transfer in a closed cavity with hot and cold tubes Zheng, Jiyu Zhang, Liang Yu, Hai Wang, Yilong Zhao, Tong Sci Prog Article Laminar natural convection with a pair of hot and cold tube in a closed cubic cavity is carried out. This configuration can be founded in performance of nuclear power plant containment passive residual heat removal system. The basic government aquations are sloved by means of finite volume method. The effect of Ra number (10(3)–10(6)), shape of tube and spatial position on local and mean heat transfer characteristics is studied. It is found that the Nu number increased when raising Ra number. The Nu number is higher when the shapes are circle and triangle. In adddition, it is founded that the heat transfer has a better effect when the cold tube locates above the hot tube among the five spatial positions. The results provides theoretical basis for performance of nuclear power plant containment passive residual heat removal system. SAGE Publications 2021-06-15 /pmc/articles/PMC10454859/ /pubmed/34128739 http://dx.doi.org/10.1177/00368504211020965 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by-nc/4.0/This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage). |
spellingShingle | Article Zheng, Jiyu Zhang, Liang Yu, Hai Wang, Yilong Zhao, Tong Study on natural convection heat transfer in a closed cavity with hot and cold tubes |
title | Study on natural convection heat transfer in a closed cavity with hot and cold tubes |
title_full | Study on natural convection heat transfer in a closed cavity with hot and cold tubes |
title_fullStr | Study on natural convection heat transfer in a closed cavity with hot and cold tubes |
title_full_unstemmed | Study on natural convection heat transfer in a closed cavity with hot and cold tubes |
title_short | Study on natural convection heat transfer in a closed cavity with hot and cold tubes |
title_sort | study on natural convection heat transfer in a closed cavity with hot and cold tubes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10454859/ https://www.ncbi.nlm.nih.gov/pubmed/34128739 http://dx.doi.org/10.1177/00368504211020965 |
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