Numerical simulation of mutual convective heat transfer and Soret-Dufour Effects in a MHD nanofluid-filled porous enclosure with fractal barriers
This study presents a numerical investigation of mutual convective heat and mass transfer in a magnetohydrodynamic (MHD) nanofluid-filled porous enclosure featuring fractal internal barriers. The analysis includes the coupled effects of Soret and Dufour diffusion mechanisms. The enclosure is subject...
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| Language: | English |
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Elsevier
2025-09-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25009621 |
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| author | Zahir Shah Muhammad Salim Khan M. Sulaiman Kholod M. Abualnaja Muhammad Asif |
| author_facet | Zahir Shah Muhammad Salim Khan M. Sulaiman Kholod M. Abualnaja Muhammad Asif |
| author_sort | Zahir Shah |
| collection | DOAJ |
| description | This study presents a numerical investigation of mutual convective heat and mass transfer in a magnetohydrodynamic (MHD) nanofluid-filled porous enclosure featuring fractal internal barriers. The analysis includes the coupled effects of Soret and Dufour diffusion mechanisms. The enclosure is subjected to thermal conditions, with heat transport driven by buoyancy and cross-diffusion phenomena. The presence of fractal barriers introduces geometrical complexity that changes the flow topology and enhances thermal stratification and solute mixing. Key parameters such as the Hartmann number, Darcy number, Soret and Dufour numbers, and the fractal geometry configuration are systematically varied to explore their influence on flow structure, temperature distribution, concentration profiles, and entropy generation. Results indicate that the introduction of fractal barriers enhances the Nusselt number by a margin and the Sherwood number by up to 22%, compared to smooth-walled enclosures. Increased magnetic intensity reduces entropy generation by 15% due to flow damping. The cross-diffusion terms (Soret and Dufour) significantly influence stratification and entropy behavior, with peak irreversibility arising near barrier interfaces. This study demonstrates the thermal solutal performance improvement offered by fractal geometries in porous media under MHD conditions, relevant to solar collectors, energy storage systems, and biomedical devices. |
| format | Article |
| id | doaj-art-580c1637c4f04f199e534b06b0a565bc |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-580c1637c4f04f199e534b06b0a565bc2025-08-20T03:50:54ZengElsevierCase Studies in Thermal Engineering2214-157X2025-09-017310670210.1016/j.csite.2025.106702Numerical simulation of mutual convective heat transfer and Soret-Dufour Effects in a MHD nanofluid-filled porous enclosure with fractal barriersZahir Shah0Muhammad Salim Khan1M. Sulaiman2Kholod M. Abualnaja3Muhammad Asif4Department of Mathematical Sciences, University of Lakki Marwat, Lakki Marwat, 28420, KPK, Pakistan; Corresponding author.Department of Mathematical Sciences, University of Lakki Marwat, Lakki Marwat, 28420, KPK, PakistanDepartment of Mathematics, COMSATS Intitute of Information Technology, Attock, 43600, PakistanUniversity of Jeddah, Applied College, Jeddah, 23816, Saudi ArabiaDepartment of Mathematics and Statistics, College of Sciences, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi ArabiaThis study presents a numerical investigation of mutual convective heat and mass transfer in a magnetohydrodynamic (MHD) nanofluid-filled porous enclosure featuring fractal internal barriers. The analysis includes the coupled effects of Soret and Dufour diffusion mechanisms. The enclosure is subjected to thermal conditions, with heat transport driven by buoyancy and cross-diffusion phenomena. The presence of fractal barriers introduces geometrical complexity that changes the flow topology and enhances thermal stratification and solute mixing. Key parameters such as the Hartmann number, Darcy number, Soret and Dufour numbers, and the fractal geometry configuration are systematically varied to explore their influence on flow structure, temperature distribution, concentration profiles, and entropy generation. Results indicate that the introduction of fractal barriers enhances the Nusselt number by a margin and the Sherwood number by up to 22%, compared to smooth-walled enclosures. Increased magnetic intensity reduces entropy generation by 15% due to flow damping. The cross-diffusion terms (Soret and Dufour) significantly influence stratification and entropy behavior, with peak irreversibility arising near barrier interfaces. This study demonstrates the thermal solutal performance improvement offered by fractal geometries in porous media under MHD conditions, relevant to solar collectors, energy storage systems, and biomedical devices.http://www.sciencedirect.com/science/article/pii/S2214157X25009621Numerical simulationMutual convective heat transferSoret-dufour effectsMHD nanofluidFilled porous enclosureFractal barriers |
| spellingShingle | Zahir Shah Muhammad Salim Khan M. Sulaiman Kholod M. Abualnaja Muhammad Asif Numerical simulation of mutual convective heat transfer and Soret-Dufour Effects in a MHD nanofluid-filled porous enclosure with fractal barriers Case Studies in Thermal Engineering Numerical simulation Mutual convective heat transfer Soret-dufour effects MHD nanofluid Filled porous enclosure Fractal barriers |
| title | Numerical simulation of mutual convective heat transfer and Soret-Dufour Effects in a MHD nanofluid-filled porous enclosure with fractal barriers |
| title_full | Numerical simulation of mutual convective heat transfer and Soret-Dufour Effects in a MHD nanofluid-filled porous enclosure with fractal barriers |
| title_fullStr | Numerical simulation of mutual convective heat transfer and Soret-Dufour Effects in a MHD nanofluid-filled porous enclosure with fractal barriers |
| title_full_unstemmed | Numerical simulation of mutual convective heat transfer and Soret-Dufour Effects in a MHD nanofluid-filled porous enclosure with fractal barriers |
| title_short | Numerical simulation of mutual convective heat transfer and Soret-Dufour Effects in a MHD nanofluid-filled porous enclosure with fractal barriers |
| title_sort | numerical simulation of mutual convective heat transfer and soret dufour effects in a mhd nanofluid filled porous enclosure with fractal barriers |
| topic | Numerical simulation Mutual convective heat transfer Soret-dufour effects MHD nanofluid Filled porous enclosure Fractal barriers |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25009621 |
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