Variations of MHD double-diffusive mixed convection and entropy generation in various nanofluids and hybrid nanofluids due to the deviation of the spinning of double rotating cylinders
The current numerical study aims to investigate the effects of various rotating speeds of rotating cylinders on mixed convection and entropy generation in a lid-driven trapezoidal enclosure for fixed magnetic field inclination angle. Several water-based hybrid nanofluids are used as governing fluids...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-11-01
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| Series: | International Journal of Thermofluids |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666202723001374 |
| _version_ | 1797401697418477568 |
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| author | Mohammad Arif Hasan Mamun Hasib Ahmed Prince Md Mehrab Hossen Siam |
| author_facet | Mohammad Arif Hasan Mamun Hasib Ahmed Prince Md Mehrab Hossen Siam |
| author_sort | Mohammad Arif Hasan Mamun |
| collection | DOAJ |
| description | The current numerical study aims to investigate the effects of various rotating speeds of rotating cylinders on mixed convection and entropy generation in a lid-driven trapezoidal enclosure for fixed magnetic field inclination angle. Several water-based hybrid nanofluids are used as governing fluids. In this work, the impacts of SWCNT-water, Cu-water, and Al2O3-water nanofluids individually, as well as the effects of three different types of SWCNT-Cu-Al2O3-water hybrid nanofluids are examined. The average Nusselt number, average Sherwood number, average temperature, and average entropy generation because of heat transfer, diffusion, fluid friction, and the applied magnetic field as well as total entropy generation and Bejan number are evaluated as output parameters for different values of governing parameters. The Galerkin weighted residual finite element method is used to numerically solve the governing Navier-Stokes, thermal energy, and mass conservation equations. The optimal values of each governing parameter are established in order to produce the best results for the output parameters. To inspect the thermal and flow field within the trapezoidal enclosure as well as the variations in mass concentrations, isotherm contours, streamlines and isoconcentration contours are studied. Better performance is found for higher rotating speed regardless of other parameters. |
| first_indexed | 2024-03-09T02:13:50Z |
| format | Article |
| id | doaj.art-8470ac2db4484309af0eb61722e87733 |
| institution | Directory Open Access Journal |
| issn | 2666-2027 |
| language | English |
| last_indexed | 2024-03-09T02:13:50Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Thermofluids |
| spelling | doaj.art-8470ac2db4484309af0eb61722e877332023-12-07T05:30:41ZengElsevierInternational Journal of Thermofluids2666-20272023-11-0120100421Variations of MHD double-diffusive mixed convection and entropy generation in various nanofluids and hybrid nanofluids due to the deviation of the spinning of double rotating cylindersMohammad Arif Hasan Mamun0Hasib Ahmed Prince1Md Mehrab Hossen Siam2Department of Mechanical Engineering, Bangladesh University of Engineering and Technology, Dhaka, 1000, BangladeshDepartment of Mechanical Engineering, Bangladesh University of Engineering and Technology, Dhaka, 1000, BangladeshCorresponding author.; Department of Mechanical Engineering, Bangladesh University of Engineering and Technology, Dhaka, 1000, BangladeshThe current numerical study aims to investigate the effects of various rotating speeds of rotating cylinders on mixed convection and entropy generation in a lid-driven trapezoidal enclosure for fixed magnetic field inclination angle. Several water-based hybrid nanofluids are used as governing fluids. In this work, the impacts of SWCNT-water, Cu-water, and Al2O3-water nanofluids individually, as well as the effects of three different types of SWCNT-Cu-Al2O3-water hybrid nanofluids are examined. The average Nusselt number, average Sherwood number, average temperature, and average entropy generation because of heat transfer, diffusion, fluid friction, and the applied magnetic field as well as total entropy generation and Bejan number are evaluated as output parameters for different values of governing parameters. The Galerkin weighted residual finite element method is used to numerically solve the governing Navier-Stokes, thermal energy, and mass conservation equations. The optimal values of each governing parameter are established in order to produce the best results for the output parameters. To inspect the thermal and flow field within the trapezoidal enclosure as well as the variations in mass concentrations, isotherm contours, streamlines and isoconcentration contours are studied. Better performance is found for higher rotating speed regardless of other parameters.http://www.sciencedirect.com/science/article/pii/S2666202723001374Hybrid nanofluidMixed convectionEntropyMHDDouble diffusive |
| spellingShingle | Mohammad Arif Hasan Mamun Hasib Ahmed Prince Md Mehrab Hossen Siam Variations of MHD double-diffusive mixed convection and entropy generation in various nanofluids and hybrid nanofluids due to the deviation of the spinning of double rotating cylinders International Journal of Thermofluids Hybrid nanofluid Mixed convection Entropy MHD Double diffusive |
| title | Variations of MHD double-diffusive mixed convection and entropy generation in various nanofluids and hybrid nanofluids due to the deviation of the spinning of double rotating cylinders |
| title_full | Variations of MHD double-diffusive mixed convection and entropy generation in various nanofluids and hybrid nanofluids due to the deviation of the spinning of double rotating cylinders |
| title_fullStr | Variations of MHD double-diffusive mixed convection and entropy generation in various nanofluids and hybrid nanofluids due to the deviation of the spinning of double rotating cylinders |
| title_full_unstemmed | Variations of MHD double-diffusive mixed convection and entropy generation in various nanofluids and hybrid nanofluids due to the deviation of the spinning of double rotating cylinders |
| title_short | Variations of MHD double-diffusive mixed convection and entropy generation in various nanofluids and hybrid nanofluids due to the deviation of the spinning of double rotating cylinders |
| title_sort | variations of mhd double diffusive mixed convection and entropy generation in various nanofluids and hybrid nanofluids due to the deviation of the spinning of double rotating cylinders |
| topic | Hybrid nanofluid Mixed convection Entropy MHD Double diffusive |
| url | http://www.sciencedirect.com/science/article/pii/S2666202723001374 |
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