Fe<sub>3</sub>O<sub>4</sub>-Water Nanofluid Free Convection within an Inclined 2D Rectangular Enclosure Heated by Solar Energy Using Finned Absorber Plate
This work investigates a hydrodynamic problem involving the Fe<sub>3</sub>O<sub>4</sub>-Water nanofluid. The novelty of this investigation lies in the fact that the nanofluid free convection is evaluated within a specific rectangular enclosure having a finned absorber plate a...
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MDPI AG
2021-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/2/486 |
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| author | Rached Nciri Yahya Ali Rothan Faouzi Nasri Chaouki Ali |
| author_facet | Rached Nciri Yahya Ali Rothan Faouzi Nasri Chaouki Ali |
| author_sort | Rached Nciri |
| collection | DOAJ |
| description | This work investigates a hydrodynamic problem involving the Fe<sub>3</sub>O<sub>4</sub>-Water nanofluid. The novelty of this investigation lies in the fact that the nanofluid free convection is evaluated within a specific rectangular enclosure having a finned absorber plate as the top wall, heated by solar energy. The fins below the absorber plate permit to enhance heat transfer towards the nanofluid. A numerical simulation is carried out in order to predict the influence of Rayleigh number, nanofluid layer position, enclosure inclination angle, and absorber plate fins height on the nanofluid flow (in terms of streamlines and velocity magnitude) and heat transfer (in terms of temperature and Nusselt number divided by a certain thermal conductivity ratio). Numerical results show a nanofluid buoyancy enhancement and a temperature distribution homogenization, when the Rayleigh number increases, all the more important and pushed to the right area of the enclosure, as the inclination angle of the enclosure is higher. For relatively low fin heights, the nanofluid buoyancy enhancement is all the more important and pushed to the right area of the enclosure as the inclination angle is high. As the fin height increases, the temperature distribution becomes more homogenous. |
| first_indexed | 2024-03-10T13:27:15Z |
| format | Article |
| id | doaj.art-9618b204d266479c9606087745c9c456 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T13:27:15Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-9618b204d266479c9606087745c9c4562023-11-21T08:54:23ZengMDPI AGApplied Sciences2076-34172021-01-0111248610.3390/app11020486Fe<sub>3</sub>O<sub>4</sub>-Water Nanofluid Free Convection within an Inclined 2D Rectangular Enclosure Heated by Solar Energy Using Finned Absorber PlateRached Nciri0Yahya Ali Rothan1Faouzi Nasri2Chaouki Ali3Department of Mechanical Engineering, Higher Institute of Technological Studies of Gafsa, General Directorate of Technological Studies, Radès Médina 2098, TunisiaMechanical Engineering Department, Faculty of Engineering, Jazan University, Jazan 82822, Saudi ArabiaMechanical Engineering Department, College of Engineering, University of Bisha, Bisha 61922, Saudi ArabiaLaboratory of Electro-Mechanical Systems (LASEM), National Engineering School of Sfax-ENIS, B.P. W3038, University of Sfax, Sfax 3038, TunisiaThis work investigates a hydrodynamic problem involving the Fe<sub>3</sub>O<sub>4</sub>-Water nanofluid. The novelty of this investigation lies in the fact that the nanofluid free convection is evaluated within a specific rectangular enclosure having a finned absorber plate as the top wall, heated by solar energy. The fins below the absorber plate permit to enhance heat transfer towards the nanofluid. A numerical simulation is carried out in order to predict the influence of Rayleigh number, nanofluid layer position, enclosure inclination angle, and absorber plate fins height on the nanofluid flow (in terms of streamlines and velocity magnitude) and heat transfer (in terms of temperature and Nusselt number divided by a certain thermal conductivity ratio). Numerical results show a nanofluid buoyancy enhancement and a temperature distribution homogenization, when the Rayleigh number increases, all the more important and pushed to the right area of the enclosure, as the inclination angle of the enclosure is higher. For relatively low fin heights, the nanofluid buoyancy enhancement is all the more important and pushed to the right area of the enclosure as the inclination angle is high. As the fin height increases, the temperature distribution becomes more homogenous.https://www.mdpi.com/2076-3417/11/2/486natural convectionfinned absorber platespecific cavitystreamlinesRayleigh numberHartmann number |
| spellingShingle | Rached Nciri Yahya Ali Rothan Faouzi Nasri Chaouki Ali Fe<sub>3</sub>O<sub>4</sub>-Water Nanofluid Free Convection within an Inclined 2D Rectangular Enclosure Heated by Solar Energy Using Finned Absorber Plate Applied Sciences natural convection finned absorber plate specific cavity streamlines Rayleigh number Hartmann number |
| title | Fe<sub>3</sub>O<sub>4</sub>-Water Nanofluid Free Convection within an Inclined 2D Rectangular Enclosure Heated by Solar Energy Using Finned Absorber Plate |
| title_full | Fe<sub>3</sub>O<sub>4</sub>-Water Nanofluid Free Convection within an Inclined 2D Rectangular Enclosure Heated by Solar Energy Using Finned Absorber Plate |
| title_fullStr | Fe<sub>3</sub>O<sub>4</sub>-Water Nanofluid Free Convection within an Inclined 2D Rectangular Enclosure Heated by Solar Energy Using Finned Absorber Plate |
| title_full_unstemmed | Fe<sub>3</sub>O<sub>4</sub>-Water Nanofluid Free Convection within an Inclined 2D Rectangular Enclosure Heated by Solar Energy Using Finned Absorber Plate |
| title_short | Fe<sub>3</sub>O<sub>4</sub>-Water Nanofluid Free Convection within an Inclined 2D Rectangular Enclosure Heated by Solar Energy Using Finned Absorber Plate |
| title_sort | fe sub 3 sub o sub 4 sub water nanofluid free convection within an inclined 2d rectangular enclosure heated by solar energy using finned absorber plate |
| topic | natural convection finned absorber plate specific cavity streamlines Rayleigh number Hartmann number |
| url | https://www.mdpi.com/2076-3417/11/2/486 |
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