Numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with different aspect ratios in the presence of porous medium
In this study, a numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with two different aspect ratios of 0.3 and 0.5 with the presence of porous media is investigated. The present study was based on Ri = 0.1, 1, and 10 and used water-Al2O3 nanofluid in ϕ= 0–3% as t...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-06-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X21001404 |
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| author | M.A. El-Shorbagy Farshad Eslami Muhammad Ibrahim Pouya Barnoon Wei-Feng Xia Davood Toghraie |
| author_facet | M.A. El-Shorbagy Farshad Eslami Muhammad Ibrahim Pouya Barnoon Wei-Feng Xia Davood Toghraie |
| author_sort | M.A. El-Shorbagy |
| collection | DOAJ |
| description | In this study, a numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with two different aspect ratios of 0.3 and 0.5 with the presence of porous media is investigated. The present study was based on Ri = 0.1, 1, and 10 and used water-Al2O3 nanofluid in ϕ= 0–3% as the working fluid. Also, metal foam made of aluminum alloy in Darcy numbers 10−2, 10−3, and 10−4 is used for the porous medium, and the thermal equilibrium model is used to simulate the porous medium. The finite volume method and the single-phase model are applied. Nusselt number diagrams for different porous heights are obtained in different Darcy and Richardson numbers for the lower and upper walls of the channel. The results show that with the decrease in Richardson number, the local and NuAveincreases. In addition, a fully filled channel with a porous medium does not yield satisfactory results for the lower wall, but the results are desirable for the upper wall. The highest heat transfer occurs in the 90% porous height range. Aspect ratio of 0.3 predicts more heat transfer than aspect ratio of 0.5. As the height of the porous medium increases, the NuAve goes through an upward-downward trend, with two heights of 10% and 90% of the turning points in this upward and downward trend. As the percentage of porous height increases, the Darcy number changes on the heat transfer rate exhibit unique behaviors. |
| first_indexed | 2024-12-20T01:06:23Z |
| format | Article |
| id | doaj.art-28b05b1270bc4a6bb11addbe1d8cb3cb |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-12-20T01:06:23Z |
| publishDate | 2021-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-28b05b1270bc4a6bb11addbe1d8cb3cb2022-12-21T19:58:50ZengElsevierCase Studies in Thermal Engineering2214-157X2021-06-0125100977Numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with different aspect ratios in the presence of porous mediumM.A. El-Shorbagy0Farshad Eslami1Muhammad Ibrahim2Pouya Barnoon3Wei-Feng Xia4Davood Toghraie5Department of Mathematics, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia; Department of Basic Engineering Science, Faculty of Engineering, Menoufia University, Shebin El-Kom, 32511, EgyptDepartment of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, IranSchool of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, ChinaDepartment of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, IranSchool of Engineering, Huzhou University, Huzhou, 313000, PR China; Corresponding author.Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, Iran; Corresponding author.In this study, a numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with two different aspect ratios of 0.3 and 0.5 with the presence of porous media is investigated. The present study was based on Ri = 0.1, 1, and 10 and used water-Al2O3 nanofluid in ϕ= 0–3% as the working fluid. Also, metal foam made of aluminum alloy in Darcy numbers 10−2, 10−3, and 10−4 is used for the porous medium, and the thermal equilibrium model is used to simulate the porous medium. The finite volume method and the single-phase model are applied. Nusselt number diagrams for different porous heights are obtained in different Darcy and Richardson numbers for the lower and upper walls of the channel. The results show that with the decrease in Richardson number, the local and NuAveincreases. In addition, a fully filled channel with a porous medium does not yield satisfactory results for the lower wall, but the results are desirable for the upper wall. The highest heat transfer occurs in the 90% porous height range. Aspect ratio of 0.3 predicts more heat transfer than aspect ratio of 0.5. As the height of the porous medium increases, the NuAve goes through an upward-downward trend, with two heights of 10% and 90% of the turning points in this upward and downward trend. As the percentage of porous height increases, the Darcy number changes on the heat transfer rate exhibit unique behaviors.http://www.sciencedirect.com/science/article/pii/S2214157X21001404Mixed convectionPorous mediumNanofluidTrapezoidal channelNumerical simulation |
| spellingShingle | M.A. El-Shorbagy Farshad Eslami Muhammad Ibrahim Pouya Barnoon Wei-Feng Xia Davood Toghraie Numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with different aspect ratios in the presence of porous medium Case Studies in Thermal Engineering Mixed convection Porous medium Nanofluid Trapezoidal channel Numerical simulation |
| title | Numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with different aspect ratios in the presence of porous medium |
| title_full | Numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with different aspect ratios in the presence of porous medium |
| title_fullStr | Numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with different aspect ratios in the presence of porous medium |
| title_full_unstemmed | Numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with different aspect ratios in the presence of porous medium |
| title_short | Numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with different aspect ratios in the presence of porous medium |
| title_sort | numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with different aspect ratios in the presence of porous medium |
| topic | Mixed convection Porous medium Nanofluid Trapezoidal channel Numerical simulation |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X21001404 |
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