Magneto-thermal optimization of Prandtl-Eyring nanofluids over an expanding cylinder in a variable porous medium: an entropic and activation energy perspective
Heat transfer in non-Newtonian nanofluids is vital for cooling, energy systems, and biomedical applications. This study examines the thermophysical behavior of Prandtl–Eyring nanofluids under magnetohydrodynamic effects within a Riga cylindrical tube, considering variable porosity and thermal radiat...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-12-01
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| Series: | Journal of Taibah University for Science |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/16583655.2025.2530820 |
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| author | Sameh A. Hussein Anas A. M. Arafa Khaled Lotfy Abd Allah A. Mousa Aly R. Seadawy |
| author_facet | Sameh A. Hussein Anas A. M. Arafa Khaled Lotfy Abd Allah A. Mousa Aly R. Seadawy |
| author_sort | Sameh A. Hussein |
| collection | DOAJ |
| description | Heat transfer in non-Newtonian nanofluids is vital for cooling, energy systems, and biomedical applications. This study examines the thermophysical behavior of Prandtl–Eyring nanofluids under magnetohydrodynamic effects within a Riga cylindrical tube, considering variable porosity and thermal radiation. Electromagnetic forcing via the Riga surface regulates flow, while entropy generation analysis evaluates system efficiency. The governing nonlinear equations are simplified using similarity transformations and numerically solved in Mathematica, with validation against existing literature. Results show that stronger magnetic fields reduce velocity by up to 42%, while thermal radiation increases heat transfer by 35%. Entropy generation rises by 60% with enhanced viscous dissipation, signaling higher energy losses. Activation energy reduces concentration gradients, lowering mass transfer by 28%. Porosity variation, surface convection, thermophoresis, and Brownian motion critically influence performance. These findings support the optimized thermal design of nanofluid-based systems in industrial and biomedical settings, where precise thermal regulation is crucial. |
| format | Article |
| id | doaj-art-41f0a280f1ba4b74a0770169b6dcccf5 |
| institution | DOAJ |
| issn | 1658-3655 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Taibah University for Science |
| spelling | doaj-art-41f0a280f1ba4b74a0770169b6dcccf52025-08-20T03:13:10ZengTaylor & Francis GroupJournal of Taibah University for Science1658-36552025-12-0119110.1080/16583655.2025.2530820Magneto-thermal optimization of Prandtl-Eyring nanofluids over an expanding cylinder in a variable porous medium: an entropic and activation energy perspectiveSameh A. Hussein0Anas A. M. Arafa1Khaled Lotfy2Abd Allah A. Mousa3Aly R. Seadawy4Department of Mathematics, Faculty of Science, Zagazig University, Zagazig, EgyptDepartment of Mathematics, College of Science, Qassim University, Buraydah, Saudi ArabiaDepartment of Mathematics, Faculty of Science, Zagazig University, Zagazig, EgyptDepartment of Mathematics and Statistics, College of Science, Taif University, Taif, Saudi ArabiaDepartment of Mathematics, Faculty of Science, Taibah University, Madinah, Saudi ArabiaHeat transfer in non-Newtonian nanofluids is vital for cooling, energy systems, and biomedical applications. This study examines the thermophysical behavior of Prandtl–Eyring nanofluids under magnetohydrodynamic effects within a Riga cylindrical tube, considering variable porosity and thermal radiation. Electromagnetic forcing via the Riga surface regulates flow, while entropy generation analysis evaluates system efficiency. The governing nonlinear equations are simplified using similarity transformations and numerically solved in Mathematica, with validation against existing literature. Results show that stronger magnetic fields reduce velocity by up to 42%, while thermal radiation increases heat transfer by 35%. Entropy generation rises by 60% with enhanced viscous dissipation, signaling higher energy losses. Activation energy reduces concentration gradients, lowering mass transfer by 28%. Porosity variation, surface convection, thermophoresis, and Brownian motion critically influence performance. These findings support the optimized thermal design of nanofluid-based systems in industrial and biomedical settings, where precise thermal regulation is crucial.https://www.tandfonline.com/doi/10.1080/16583655.2025.2530820Variable porositynanofluidsRiga surfacemagnetohydrodynamics (MHD)activation energyentropy generation |
| spellingShingle | Sameh A. Hussein Anas A. M. Arafa Khaled Lotfy Abd Allah A. Mousa Aly R. Seadawy Magneto-thermal optimization of Prandtl-Eyring nanofluids over an expanding cylinder in a variable porous medium: an entropic and activation energy perspective Journal of Taibah University for Science Variable porosity nanofluids Riga surface magnetohydrodynamics (MHD) activation energy entropy generation |
| title | Magneto-thermal optimization of Prandtl-Eyring nanofluids over an expanding cylinder in a variable porous medium: an entropic and activation energy perspective |
| title_full | Magneto-thermal optimization of Prandtl-Eyring nanofluids over an expanding cylinder in a variable porous medium: an entropic and activation energy perspective |
| title_fullStr | Magneto-thermal optimization of Prandtl-Eyring nanofluids over an expanding cylinder in a variable porous medium: an entropic and activation energy perspective |
| title_full_unstemmed | Magneto-thermal optimization of Prandtl-Eyring nanofluids over an expanding cylinder in a variable porous medium: an entropic and activation energy perspective |
| title_short | Magneto-thermal optimization of Prandtl-Eyring nanofluids over an expanding cylinder in a variable porous medium: an entropic and activation energy perspective |
| title_sort | magneto thermal optimization of prandtl eyring nanofluids over an expanding cylinder in a variable porous medium an entropic and activation energy perspective |
| topic | Variable porosity nanofluids Riga surface magnetohydrodynamics (MHD) activation energy entropy generation |
| url | https://www.tandfonline.com/doi/10.1080/16583655.2025.2530820 |
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