Numerical Study of Entropy Generation for Natural Convection in Cylindrical Cavities
In this paper, an enhanced computational code was developed using finite-volume method for solving the incompressible natural convection flow within the cylindrical cavities. Grids were generated by an easy method with a view to computer program providing. An explicit integration algorithm was appli...
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| Format: | Article |
| Language: | English |
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Semnan University
2016-10-01
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| Series: | Journal of Heat and Mass Transfer Research |
| Subjects: | |
| Online Access: | https://jhmtr.semnan.ac.ir/article_347_78c6fe0a1f9bb42b45e099a3972abb95.pdf |
| _version_ | 1797259614443536384 |
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| author | Abdollah Rezvani Mohammad Sadegh Valipour Mojtaba Biglari |
| author_facet | Abdollah Rezvani Mohammad Sadegh Valipour Mojtaba Biglari |
| author_sort | Abdollah Rezvani |
| collection | DOAJ |
| description | In this paper, an enhanced computational code was developed using finite-volume method for solving the incompressible natural convection flow within the cylindrical cavities. Grids were generated by an easy method with a view to computer program providing. An explicit integration algorithm was applied to find the steady state condition. Also instead of the conventional algorithms of SIMPLE, SIMPLEM and SIMPLEC, an artificial compressibility technique is applied for coupling the continuity to the momentum equations. The entropy generation, which is a representation of the irreversibility and efficiency loss in engineering heat transfer processes, has been analyzed in detail. The discretization of the diffusion terms were very simplified using the enhanced scheme similar to the flux averaging in the convective term. Additionally an analysis of the entropy generation in a cylindrical enclosure was performed. In order to show the validation of this study, the code was reproduced to solve similar problem of cited paper. Finally, the solutions were extended for the new cases. |
| first_indexed | 2024-04-24T23:12:14Z |
| format | Article |
| id | doaj.art-0b091bf0915f46cb97cd84d533fbb57f |
| institution | Directory Open Access Journal |
| issn | 2345-508X 2383-3068 |
| language | English |
| last_indexed | 2024-04-24T23:12:14Z |
| publishDate | 2016-10-01 |
| publisher | Semnan University |
| record_format | Article |
| series | Journal of Heat and Mass Transfer Research |
| spelling | doaj.art-0b091bf0915f46cb97cd84d533fbb57f2024-03-17T08:03:15ZengSemnan UniversityJournal of Heat and Mass Transfer Research2345-508X2383-30682016-10-0132899910.22075/jhmtr.2015.347347Numerical Study of Entropy Generation for Natural Convection in Cylindrical CavitiesAbdollah Rezvani0Mohammad Sadegh Valipour1Mojtaba Biglari2Enter affiliationFaculty of mechanical engineeringFaculty of mechanical engineeringIn this paper, an enhanced computational code was developed using finite-volume method for solving the incompressible natural convection flow within the cylindrical cavities. Grids were generated by an easy method with a view to computer program providing. An explicit integration algorithm was applied to find the steady state condition. Also instead of the conventional algorithms of SIMPLE, SIMPLEM and SIMPLEC, an artificial compressibility technique is applied for coupling the continuity to the momentum equations. The entropy generation, which is a representation of the irreversibility and efficiency loss in engineering heat transfer processes, has been analyzed in detail. The discretization of the diffusion terms were very simplified using the enhanced scheme similar to the flux averaging in the convective term. Additionally an analysis of the entropy generation in a cylindrical enclosure was performed. In order to show the validation of this study, the code was reproduced to solve similar problem of cited paper. Finally, the solutions were extended for the new cases.https://jhmtr.semnan.ac.ir/article_347_78c6fe0a1f9bb42b45e099a3972abb95.pdfartificial compressibilityentropyexplicit finite-volume methodnatural convectionnuselt number |
| spellingShingle | Abdollah Rezvani Mohammad Sadegh Valipour Mojtaba Biglari Numerical Study of Entropy Generation for Natural Convection in Cylindrical Cavities Journal of Heat and Mass Transfer Research artificial compressibility entropy explicit finite-volume method natural convection nuselt number |
| title | Numerical Study of Entropy Generation for Natural Convection in Cylindrical Cavities |
| title_full | Numerical Study of Entropy Generation for Natural Convection in Cylindrical Cavities |
| title_fullStr | Numerical Study of Entropy Generation for Natural Convection in Cylindrical Cavities |
| title_full_unstemmed | Numerical Study of Entropy Generation for Natural Convection in Cylindrical Cavities |
| title_short | Numerical Study of Entropy Generation for Natural Convection in Cylindrical Cavities |
| title_sort | numerical study of entropy generation for natural convection in cylindrical cavities |
| topic | artificial compressibility entropy explicit finite-volume method natural convection nuselt number |
| url | https://jhmtr.semnan.ac.ir/article_347_78c6fe0a1f9bb42b45e099a3972abb95.pdf |
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