Effects of discharge concentration and convective boundary conditions on unsteady hybrid nanofluid flow in a porous medium
This study explores using hybrid nanofluids to improve water quality by enhancing heat transfer and substance decomposition. Nanofluids effectively remove pollutants, optimise heat transfer, control pollution sources, and regulate fluid dynamics, which can lead to efficient pollution management in w...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-06-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24004052 |
| _version_ | 1797200868945166336 |
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| author | Yun Ouyang Md Faisal Md Basir Kohilavani Naganthran Ioan Pop |
| author_facet | Yun Ouyang Md Faisal Md Basir Kohilavani Naganthran Ioan Pop |
| author_sort | Yun Ouyang |
| collection | DOAJ |
| description | This study explores using hybrid nanofluids to improve water quality by enhancing heat transfer and substance decomposition. Nanofluids effectively remove pollutants, optimise heat transfer, control pollution sources, and regulate fluid dynamics, which can lead to efficient pollution management in water systems. Thus, the present research examines the flow of an unsteady hybrid Al2O3–Cu/water nanofluid near the stagnation region in a porous medium, considering the discharge concentration and convective boundary conditions. Governing equations in ordinary differential equations are obtained using similarity transformations. The BVP4C solver in MATLAB is employed to expose dual solutions. The volume fraction of copper φa2, the suction/injection parameter (S), and the unsteadiness parameter (A), collectively contribute to the delay of the boundary layer separation. Increasing the values of φa2,A, and S enhances convective heat transfer. When the sheet shrunk between the range of −16.2 and −13, hybrid nanofluid has higher convective thermal transfer than nanofluid. Moreover, an increment in φa2 and S raises the skin friction coefficients and mass diffusion rates. Stability analysis reveals that the first solution is stable while the second one is unstable. |
| first_indexed | 2024-04-24T07:38:30Z |
| format | Article |
| id | doaj.art-4de290a3bef6413598a81f2a0e821c7d |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-24T07:38:30Z |
| publishDate | 2024-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-4de290a3bef6413598a81f2a0e821c7d2024-04-20T04:17:26ZengElsevierCase Studies in Thermal Engineering2214-157X2024-06-0158104374Effects of discharge concentration and convective boundary conditions on unsteady hybrid nanofluid flow in a porous mediumYun Ouyang0Md Faisal Md Basir1Kohilavani Naganthran2Ioan Pop3School of Mathematics and Physics, Hechi University, 546300, Yizhou, Guangxi, China; Department of Mathematical Sciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, MalaysiaDepartment of Mathematical Sciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia; Corresponding author.Institute of Mathematical Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia; Center for Data Analytics Consultancy and Services, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, MalaysiaDepartment of Mathematics, Babes-Bolyai University, R-400084, Cluj-Napoca, RomaniaThis study explores using hybrid nanofluids to improve water quality by enhancing heat transfer and substance decomposition. Nanofluids effectively remove pollutants, optimise heat transfer, control pollution sources, and regulate fluid dynamics, which can lead to efficient pollution management in water systems. Thus, the present research examines the flow of an unsteady hybrid Al2O3–Cu/water nanofluid near the stagnation region in a porous medium, considering the discharge concentration and convective boundary conditions. Governing equations in ordinary differential equations are obtained using similarity transformations. The BVP4C solver in MATLAB is employed to expose dual solutions. The volume fraction of copper φa2, the suction/injection parameter (S), and the unsteadiness parameter (A), collectively contribute to the delay of the boundary layer separation. Increasing the values of φa2,A, and S enhances convective heat transfer. When the sheet shrunk between the range of −16.2 and −13, hybrid nanofluid has higher convective thermal transfer than nanofluid. Moreover, an increment in φa2 and S raises the skin friction coefficients and mass diffusion rates. Stability analysis reveals that the first solution is stable while the second one is unstable.http://www.sciencedirect.com/science/article/pii/S2214157X24004052Hybrid nanofluidBoundary layer flowStagnation point flowStretching/shrinking sheetPorous mediumDual solutions |
| spellingShingle | Yun Ouyang Md Faisal Md Basir Kohilavani Naganthran Ioan Pop Effects of discharge concentration and convective boundary conditions on unsteady hybrid nanofluid flow in a porous medium Case Studies in Thermal Engineering Hybrid nanofluid Boundary layer flow Stagnation point flow Stretching/shrinking sheet Porous medium Dual solutions |
| title | Effects of discharge concentration and convective boundary conditions on unsteady hybrid nanofluid flow in a porous medium |
| title_full | Effects of discharge concentration and convective boundary conditions on unsteady hybrid nanofluid flow in a porous medium |
| title_fullStr | Effects of discharge concentration and convective boundary conditions on unsteady hybrid nanofluid flow in a porous medium |
| title_full_unstemmed | Effects of discharge concentration and convective boundary conditions on unsteady hybrid nanofluid flow in a porous medium |
| title_short | Effects of discharge concentration and convective boundary conditions on unsteady hybrid nanofluid flow in a porous medium |
| title_sort | effects of discharge concentration and convective boundary conditions on unsteady hybrid nanofluid flow in a porous medium |
| topic | Hybrid nanofluid Boundary layer flow Stagnation point flow Stretching/shrinking sheet Porous medium Dual solutions |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24004052 |
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