Numerical Study and Geometric Investigation of Corrugated Channels Subjected to Forced Convective Flows
The employment of heat exchangers with complex channels has increasing importance in several engineering problems as commercial refrigeration and cooling of electronic packages. One important subject in this kind of device is the design of corrugated channels. Therefore, the present work aims at the...
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| Format: | Article |
| Language: | English |
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Shahid Chamran University of Ahvaz
2021-04-01
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| Series: | Journal of Applied and Computational Mechanics |
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| Online Access: | https://jacm.scu.ac.ir/article_16188_2711133ee76f1232766025157b7dbe4f.pdf |
| _version_ | 1819120174959165440 |
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| author | Rafael Moreira Cícero Coelho de Escobar Liércio André Isoldi Rodrigo Davesac Luiz Rocha Elizaldo dos Santos |
| author_facet | Rafael Moreira Cícero Coelho de Escobar Liércio André Isoldi Rodrigo Davesac Luiz Rocha Elizaldo dos Santos |
| author_sort | Rafael Moreira |
| collection | DOAJ |
| description | The employment of heat exchangers with complex channels has increasing importance in several engineering problems as commercial refrigeration and cooling of electronic packages. One important subject in this kind of device is the design of corrugated channels. Therefore, the present work aims at the geometric optimization of trapezoidal blocks mounted in channels subjected to steady, incompressible, laminar, two-dimensional forced convective flows. The computational domain studied here mimics the corrugated channels commonly found in micro-channel heat exchangers. For the geometrical investigation, it is employed the Constructal Design Method. The numerical simulations were performed for two Reynolds numbers (ReH) equal to 60 and 160 and constant Prandtl number (Pr = 6.99). Results demonstrated that the length/height ratios of both studied blocks (given by L1/H1 and L2/H2 ratios) have the highest sensibility over the thermal performance, showing the importance of the channel's blocks intrusion. It was also shown that the combined analysis of the ratios L1/H1 and L2/H2 was much more efficient for the improvement of the heat transfer rate in the corrugated channels. The thermal performance increased by nearly 65% when the best and worst configurations were compared. |
| first_indexed | 2024-12-22T06:16:29Z |
| format | Article |
| id | doaj.art-c72d553a17b84303905f7a6345a53b93 |
| institution | Directory Open Access Journal |
| issn | 2383-4536 2383-4536 |
| language | English |
| last_indexed | 2024-12-22T06:16:29Z |
| publishDate | 2021-04-01 |
| publisher | Shahid Chamran University of Ahvaz |
| record_format | Article |
| series | Journal of Applied and Computational Mechanics |
| spelling | doaj.art-c72d553a17b84303905f7a6345a53b932022-12-21T18:36:05ZengShahid Chamran University of AhvazJournal of Applied and Computational Mechanics2383-45362383-45362021-04-017272773810.22055/jacm.2020.35345.263416188Numerical Study and Geometric Investigation of Corrugated Channels Subjected to Forced Convective FlowsRafael Moreira0Cícero Coelho de Escobar1Liércio André Isoldi2Rodrigo Davesac3Luiz Rocha4Elizaldo dos Santos5Graduate Program in Ocean Engineering, Federal University of Rio Grande – FURG, Av. Itália, km 8, 96203-900 Rio Grande, RS, BrazilEnvironmental and Sanitary Engineering, Engineering Center, UFPel, Pelotas, RS, BrazilGraduate Program in Ocean Engineering, Federal University of Rio Grande – FURG, Av. Itália, km 8, 96203-900 Rio Grande, RS, BrazilSchool of Engineering, Federal University of Rio Grande – FURG, Italia Av., km 8, 96203-900 Rio Grande, RS, BrazilUniversity of the Valley of Bells River (Unisinos), Department of Mechanical Engineering, 950 Unisinos Av., São Leopoldo, 93022-750, BrazilGraduate Program in Computational Modeling, Federal University of Rio Grande – FURG, Av. Itália, km 8, 96203-900 Rio Grande, RS, BrazilThe employment of heat exchangers with complex channels has increasing importance in several engineering problems as commercial refrigeration and cooling of electronic packages. One important subject in this kind of device is the design of corrugated channels. Therefore, the present work aims at the geometric optimization of trapezoidal blocks mounted in channels subjected to steady, incompressible, laminar, two-dimensional forced convective flows. The computational domain studied here mimics the corrugated channels commonly found in micro-channel heat exchangers. For the geometrical investigation, it is employed the Constructal Design Method. The numerical simulations were performed for two Reynolds numbers (ReH) equal to 60 and 160 and constant Prandtl number (Pr = 6.99). Results demonstrated that the length/height ratios of both studied blocks (given by L1/H1 and L2/H2 ratios) have the highest sensibility over the thermal performance, showing the importance of the channel's blocks intrusion. It was also shown that the combined analysis of the ratios L1/H1 and L2/H2 was much more efficient for the improvement of the heat transfer rate in the corrugated channels. The thermal performance increased by nearly 65% when the best and worst configurations were compared.https://jacm.scu.ac.ir/article_16188_2711133ee76f1232766025157b7dbe4f.pdfinternal flowstrapezoidal obstaclesforced convectionnumerical studyconstructal design |
| spellingShingle | Rafael Moreira Cícero Coelho de Escobar Liércio André Isoldi Rodrigo Davesac Luiz Rocha Elizaldo dos Santos Numerical Study and Geometric Investigation of Corrugated Channels Subjected to Forced Convective Flows Journal of Applied and Computational Mechanics internal flows trapezoidal obstacles forced convection numerical study constructal design |
| title | Numerical Study and Geometric Investigation of Corrugated Channels Subjected to Forced Convective Flows |
| title_full | Numerical Study and Geometric Investigation of Corrugated Channels Subjected to Forced Convective Flows |
| title_fullStr | Numerical Study and Geometric Investigation of Corrugated Channels Subjected to Forced Convective Flows |
| title_full_unstemmed | Numerical Study and Geometric Investigation of Corrugated Channels Subjected to Forced Convective Flows |
| title_short | Numerical Study and Geometric Investigation of Corrugated Channels Subjected to Forced Convective Flows |
| title_sort | numerical study and geometric investigation of corrugated channels subjected to forced convective flows |
| topic | internal flows trapezoidal obstacles forced convection numerical study constructal design |
| url | https://jacm.scu.ac.ir/article_16188_2711133ee76f1232766025157b7dbe4f.pdf |
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