Thermal analysis of micropolar nanofluid in partially heated rectangular enclosure rooted with wavy heated rods
Thermal flow fields subject to finite spaces bounded by heated walls claim numerous applications like electronic cooling systems, cooling towers, furnaces, and thermal individualities in buildings and rooms to mention just a few. The factor in this regard is internal convection also termed natural c...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-02-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X23000072 |
| _version_ | 1797936377054101504 |
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| author | Khalil Ur Rehman A.U. Khan Safdar Abbas Wasfi Shatanawi |
| author_facet | Khalil Ur Rehman A.U. Khan Safdar Abbas Wasfi Shatanawi |
| author_sort | Khalil Ur Rehman |
| collection | DOAJ |
| description | Thermal flow fields subject to finite spaces bounded by heated walls claim numerous applications like electronic cooling systems, cooling towers, furnaces, and thermal individualities in buildings and rooms to mention just a few. The factor in this regard is internal convection also termed natural convection. Owing to such importance of the thermal flow field in the enclosure we examine the internal convection aspects in a rectangular enclosure having wavy heated rods filled with nano micropolar fluid. The thermal flow field is mathematically modelled. Koo and Kleinstreuerli models for the thermophysical characteristics of nanofluids are taken into account. The numerical technique is used to account for solutions. The flow intensity, temperature distribution, and Nusselt number are offered by means of graphs. The results are shared for a micropolar parameters (0≤R≤5), nanoparticles volume fraction (0.1≤φ≤0.3) and Rayleigh numbers (104≤Ra≤106). The results demonstrate that for higher values of Ra, φ and R, the thermal flow field improved. The influence of the nanoparticles volume fraction is favorable for minimizing the costs of heat transfers. For both upper and lower heated lengths, the Nusselt number increases as the Rayleigh number increases. For the micropolar fluid parameter, the Nusselt number has an increasing effect at the lower heated length, while at the upper heated length the Nusselt number shows a declining nature. |
| first_indexed | 2024-04-10T18:28:50Z |
| format | Article |
| id | doaj.art-6d02428bac7c400aba857d6e4e66a6b8 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-10T18:28:50Z |
| publishDate | 2023-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-6d02428bac7c400aba857d6e4e66a6b82023-02-02T04:48:31ZengElsevierCase Studies in Thermal Engineering2214-157X2023-02-0142102701Thermal analysis of micropolar nanofluid in partially heated rectangular enclosure rooted with wavy heated rodsKhalil Ur Rehman0A.U. Khan1Safdar Abbas2Wasfi Shatanawi3Department of Mathematics and Sciences, College of Humanities and Sciences, Prince Sultan University, Riyadh, 11586, Saudi Arabia; Department of Mathematics, Air University, PAF Complex E-9, Islamabad, 44000, Pakistan; Corresponding author. Department of Mathematics and Sciences, College of Humanities and Sciences, Prince Sultan University, Riyadh, 11586, Saudi Arabia.Department of Mathematics, HITEC University, Taxila Cantt, PakistanDepartment of Mathematics, Institute of Numerical Sciences, Gomal University, Dera Ismail Khan, KPK, PakistanDepartment of Mathematics and Sciences, College of Humanities and Sciences, Prince Sultan University, Riyadh, 11586, Saudi Arabia; Department of Mathematics, Faculty of Science, The Hashemite University, P.O Box 330127, Zarqa, 13133, Jordan; Corresponding author. Department of Mathematics and Sciences, College of Humanities and Sciences, Prince Sultan University, Riyadh, 11586, Saudi Arabia.Thermal flow fields subject to finite spaces bounded by heated walls claim numerous applications like electronic cooling systems, cooling towers, furnaces, and thermal individualities in buildings and rooms to mention just a few. The factor in this regard is internal convection also termed natural convection. Owing to such importance of the thermal flow field in the enclosure we examine the internal convection aspects in a rectangular enclosure having wavy heated rods filled with nano micropolar fluid. The thermal flow field is mathematically modelled. Koo and Kleinstreuerli models for the thermophysical characteristics of nanofluids are taken into account. The numerical technique is used to account for solutions. The flow intensity, temperature distribution, and Nusselt number are offered by means of graphs. The results are shared for a micropolar parameters (0≤R≤5), nanoparticles volume fraction (0.1≤φ≤0.3) and Rayleigh numbers (104≤Ra≤106). The results demonstrate that for higher values of Ra, φ and R, the thermal flow field improved. The influence of the nanoparticles volume fraction is favorable for minimizing the costs of heat transfers. For both upper and lower heated lengths, the Nusselt number increases as the Rayleigh number increases. For the micropolar fluid parameter, the Nusselt number has an increasing effect at the lower heated length, while at the upper heated length the Nusselt number shows a declining nature.http://www.sciencedirect.com/science/article/pii/S2214157X23000072Micropolar fluidNatural convectionRectangular enclosureNano fluidSinusoidal heated rods |
| spellingShingle | Khalil Ur Rehman A.U. Khan Safdar Abbas Wasfi Shatanawi Thermal analysis of micropolar nanofluid in partially heated rectangular enclosure rooted with wavy heated rods Case Studies in Thermal Engineering Micropolar fluid Natural convection Rectangular enclosure Nano fluid Sinusoidal heated rods |
| title | Thermal analysis of micropolar nanofluid in partially heated rectangular enclosure rooted with wavy heated rods |
| title_full | Thermal analysis of micropolar nanofluid in partially heated rectangular enclosure rooted with wavy heated rods |
| title_fullStr | Thermal analysis of micropolar nanofluid in partially heated rectangular enclosure rooted with wavy heated rods |
| title_full_unstemmed | Thermal analysis of micropolar nanofluid in partially heated rectangular enclosure rooted with wavy heated rods |
| title_short | Thermal analysis of micropolar nanofluid in partially heated rectangular enclosure rooted with wavy heated rods |
| title_sort | thermal analysis of micropolar nanofluid in partially heated rectangular enclosure rooted with wavy heated rods |
| topic | Micropolar fluid Natural convection Rectangular enclosure Nano fluid Sinusoidal heated rods |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X23000072 |
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