Enhanced natural convection in a U-shaped baffled cavity: Synergistic effects of magnetic fields and wall oscillations on Nano-encapsulated PCM
<p dir="ltr">Thermal management systems incorporating phase change materials have gained significant attention due to their high energy storage capacity and temperature control capabilities. Recent advances in nano-encapsulated phase change materials (NEPCMs) combined with magnetic f...
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| مؤلفون آخرون: | , , , , |
| منشور في: |
2025
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| _version_ | 1864513547753488384 |
|---|---|
| author | Ahmed M. Hassan (8893106) |
| author2 | Mohammed Azeez Alomari (20482592) Abdalrahman Alajmi (20484200) Abdellatif M. Sadeq (16931841) Faris Alqurashi (20482595) Mujtaba A. Flayyih (20482598) |
| author2_role | author author author author author |
| author_facet | Ahmed M. Hassan (8893106) Mohammed Azeez Alomari (20482592) Abdalrahman Alajmi (20484200) Abdellatif M. Sadeq (16931841) Faris Alqurashi (20482595) Mujtaba A. Flayyih (20482598) |
| author_role | author |
| dc.creator.none.fl_str_mv | Ahmed M. Hassan (8893106) Mohammed Azeez Alomari (20482592) Abdalrahman Alajmi (20484200) Abdellatif M. Sadeq (16931841) Faris Alqurashi (20482595) Mujtaba A. Flayyih (20482598) |
| dc.date.none.fl_str_mv | 2025-05-09T06:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.icheatmasstransfer.2025.109051 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Enhanced_natural_convection_in_a_U-shaped_baffled_cavity_Synergistic_effects_of_magnetic_fields_and_wall_oscillations_on_Nano-encapsulated_PCM/29108723 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Fluid mechanics and thermal engineering Materials engineering Thermal energy storage Nano-encapsulated phase change materials Natural convection enhancement U-shaped baffled cavity Magnetohydrodynamic flow control Moving boundary heat transfer |
| dc.title.none.fl_str_mv | Enhanced natural convection in a U-shaped baffled cavity: Synergistic effects of magnetic fields and wall oscillations on Nano-encapsulated PCM |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">Thermal management systems incorporating phase change materials have gained significant attention due to their high energy storage capacity and temperature control capabilities. Recent advances in nano-encapsulated phase change materials (NEPCMs) combined with magnetic field control offer promising solutions for enhanced heat transfer applications. However, the combined effects of mechanical oscillations and magnetic fields on NEPCM performance remain unexplored in complex geometries. This study investigates natural convection in a U-shaped baffled cavity filled with a nano-encapsulated phase change material (NEPCM) water mixture, featuring an oscillating bottom wall and subject to an inclined magnetic field. The finite element method is employed to solve the governing equations, with the Arbitrary Lagrangian-Eulerian approach used to handle the moving boundary. A comprehensive parametric study explores the effects of Rayleigh number (10<sup>3</sup>–10<sup>5</sup>), Stefan number (0.1–0.9), fusion temperature (0.1–0.9), nanoparticle volume fraction (0.01–0.04), oscillation amplitude (0.07–0.2), Hartmann number (0−20), and magnetic field angle (0°-90°) on heat transfer performance. Results show that the Rayleigh number has the most significant impact, increasing the time-averaged Nusselt number by 129.8 % as <i>Ra</i> rises from 10<sup>3</sup> to 10<sup>5</sup>. Nanoparticle volume fraction also significantly enhances heat transfer, with a 58.9 % increase in Nusselt number as <i>ϕ</i> increases from 0.01 to 0.04. The optimal oscillation amplitude of 0.07 achieves a maximum Nusselt number of 1.4377, while larger amplitudes reduce heat transfer efficiency by up to 4.5 %. These findings provide valuable insights for optimizing thermal management systems utilizing NEPCM nanofluids in complex geometries with phase change processes.</p><h2>Other Information</h2><p dir="ltr">Published in: International Communications in Heat and Mass Transfer<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.icheatmasstransfer.2025.109051" target="_blank">https://dx.doi.org/10.1016/j.icheatmasstransfer.2025.109051</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_5f7cf8429198900252a9c8373494da1f |
| identifier_str_mv | 10.1016/j.icheatmasstransfer.2025.109051 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/29108723 |
| publishDate | 2025 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Enhanced natural convection in a U-shaped baffled cavity: Synergistic effects of magnetic fields and wall oscillations on Nano-encapsulated PCMAhmed M. Hassan (8893106)Mohammed Azeez Alomari (20482592)Abdalrahman Alajmi (20484200)Abdellatif M. Sadeq (16931841)Faris Alqurashi (20482595)Mujtaba A. Flayyih (20482598)EngineeringFluid mechanics and thermal engineeringMaterials engineeringThermal energy storageNano-encapsulated phase change materialsNatural convection enhancementU-shaped baffled cavityMagnetohydrodynamic flow controlMoving boundary heat transfer<p dir="ltr">Thermal management systems incorporating phase change materials have gained significant attention due to their high energy storage capacity and temperature control capabilities. Recent advances in nano-encapsulated phase change materials (NEPCMs) combined with magnetic field control offer promising solutions for enhanced heat transfer applications. However, the combined effects of mechanical oscillations and magnetic fields on NEPCM performance remain unexplored in complex geometries. This study investigates natural convection in a U-shaped baffled cavity filled with a nano-encapsulated phase change material (NEPCM) water mixture, featuring an oscillating bottom wall and subject to an inclined magnetic field. The finite element method is employed to solve the governing equations, with the Arbitrary Lagrangian-Eulerian approach used to handle the moving boundary. A comprehensive parametric study explores the effects of Rayleigh number (10<sup>3</sup>–10<sup>5</sup>), Stefan number (0.1–0.9), fusion temperature (0.1–0.9), nanoparticle volume fraction (0.01–0.04), oscillation amplitude (0.07–0.2), Hartmann number (0−20), and magnetic field angle (0°-90°) on heat transfer performance. Results show that the Rayleigh number has the most significant impact, increasing the time-averaged Nusselt number by 129.8 % as <i>Ra</i> rises from 10<sup>3</sup> to 10<sup>5</sup>. Nanoparticle volume fraction also significantly enhances heat transfer, with a 58.9 % increase in Nusselt number as <i>ϕ</i> increases from 0.01 to 0.04. The optimal oscillation amplitude of 0.07 achieves a maximum Nusselt number of 1.4377, while larger amplitudes reduce heat transfer efficiency by up to 4.5 %. These findings provide valuable insights for optimizing thermal management systems utilizing NEPCM nanofluids in complex geometries with phase change processes.</p><h2>Other Information</h2><p dir="ltr">Published in: International Communications in Heat and Mass Transfer<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.icheatmasstransfer.2025.109051" target="_blank">https://dx.doi.org/10.1016/j.icheatmasstransfer.2025.109051</a></p>2025-05-09T06:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.icheatmasstransfer.2025.109051https://figshare.com/articles/journal_contribution/Enhanced_natural_convection_in_a_U-shaped_baffled_cavity_Synergistic_effects_of_magnetic_fields_and_wall_oscillations_on_Nano-encapsulated_PCM/29108723CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/291087232025-05-09T06:00:00Z |
| spellingShingle | Enhanced natural convection in a U-shaped baffled cavity: Synergistic effects of magnetic fields and wall oscillations on Nano-encapsulated PCM Ahmed M. Hassan (8893106) Engineering Fluid mechanics and thermal engineering Materials engineering Thermal energy storage Nano-encapsulated phase change materials Natural convection enhancement U-shaped baffled cavity Magnetohydrodynamic flow control Moving boundary heat transfer |
| status_str | publishedVersion |
| title | Enhanced natural convection in a U-shaped baffled cavity: Synergistic effects of magnetic fields and wall oscillations on Nano-encapsulated PCM |
| title_full | Enhanced natural convection in a U-shaped baffled cavity: Synergistic effects of magnetic fields and wall oscillations on Nano-encapsulated PCM |
| title_fullStr | Enhanced natural convection in a U-shaped baffled cavity: Synergistic effects of magnetic fields and wall oscillations on Nano-encapsulated PCM |
| title_full_unstemmed | Enhanced natural convection in a U-shaped baffled cavity: Synergistic effects of magnetic fields and wall oscillations on Nano-encapsulated PCM |
| title_short | Enhanced natural convection in a U-shaped baffled cavity: Synergistic effects of magnetic fields and wall oscillations on Nano-encapsulated PCM |
| title_sort | Enhanced natural convection in a U-shaped baffled cavity: Synergistic effects of magnetic fields and wall oscillations on Nano-encapsulated PCM |
| topic | Engineering Fluid mechanics and thermal engineering Materials engineering Thermal energy storage Nano-encapsulated phase change materials Natural convection enhancement U-shaped baffled cavity Magnetohydrodynamic flow control Moving boundary heat transfer |