Enhanced conjugate natural convection in a corrugated porous enclosure with Ag-MgO hybrid nanofluid
Understanding the impact of hybrid nanofluids (NF) on natural convection (NC) within complex enclosures can significantly advance the efficiency of heat transfer (HT) mechanisms. These advancements play a crucial role in various engineering applications, such as thermal systems in electronics, energ...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | International Journal of Thermofluids |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666202724000168 |
| _version_ | 1797306897228890112 |
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| author | Zaid Al-Dulaimi Hakim T. Kadhim Malik F. Jaffer Ahmed Al-Manea Raed Al-Rbaihat Ali Alahmer |
| author_facet | Zaid Al-Dulaimi Hakim T. Kadhim Malik F. Jaffer Ahmed Al-Manea Raed Al-Rbaihat Ali Alahmer |
| author_sort | Zaid Al-Dulaimi |
| collection | DOAJ |
| description | Understanding the impact of hybrid nanofluids (NF) on natural convection (NC) within complex enclosures can significantly advance the efficiency of heat transfer (HT) mechanisms. These advancements play a crucial role in various engineering applications, such as thermal systems in electronics, energy conversion, and heat exchangers. This study numerically examined the NC taking place within a sinusoidal corrugated enclosure filled with an Ag-MgO hybrid NF. This system was heated differentially by a vertical solid wall. The vertical right wall of the solid is maintained at an isothermal at a high-temperature Th, while the left vertical wall of the cavity is kept at an isothermal at a low-temperature Tc. The vertical left wall of the solid is in contact with the porous medium (PM) saturated with the cavity's hybrid NF. In contrast, the top and bottom horizontal walls are maintained adiabatic. The governing equations were solved by employing the Galerkin weighted residual finite elements approach. The porous domain is modeled by employing the Darcy-Brinkman formulation. The parameters being studied encompass the Darcy number (10−5 ≤ Da ≤ 10−2), Rayleigh number (103 ≤ Ra ≤ 106), nanoparticle volume fraction (0 ≤ ϕ ≤ 0.04), amplitude of waviness (0.05 ≤ A ≤ 0.2), and number of undulations (1 ≤ N ≤ 4). The results highlighted that the introduction of hybrid nanoparticles into the pure fluid enhances the HT rate across the parameter spectrum. The highest average Nusselt number (Nuav) is attained at Ra = 106, Da = 10−2, A = 0.2 and N = 4. The findings of the current study have practical implications for current industrial applications, particularly in the cooling of electronic devices. |
| first_indexed | 2024-03-08T00:48:28Z |
| format | Article |
| id | doaj.art-de81e63cae284f10854519f9856cdb60 |
| institution | Directory Open Access Journal |
| issn | 2666-2027 |
| language | English |
| last_indexed | 2024-03-08T00:48:28Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Thermofluids |
| spelling | doaj.art-de81e63cae284f10854519f9856cdb602024-02-15T05:25:39ZengElsevierInternational Journal of Thermofluids2666-20272024-02-0121100574Enhanced conjugate natural convection in a corrugated porous enclosure with Ag-MgO hybrid nanofluidZaid Al-Dulaimi0Hakim T. Kadhim1Malik F. Jaffer2Ahmed Al-Manea3Raed Al-Rbaihat4Ali Alahmer5Mechanical Department, Al-Furat Al-Awsat Technical University, Kufa, 54003, IraqMechanical Department, Al-Furat Al-Awsat Technical University, Kufa, 54003, IraqMechanical Department, Al-Furat Al-Awsat Technical University, Kufa, 54003, IraqMechanical Department, Al-Furat Al-Awsat Technical University, Kufa, 54003, IraqDepartment of Mechanical Engineering, Faculty of Engineering, Tafila Technical University, Tafila 66110, JordanDepartment of Mechanical Engineering, Faculty of Engineering, Tafila Technical University, Tafila 66110, Jordan; Department of Mechanical Engineering, Tuskegee University, Tuskegee, AL 36088, USA; Department of Industrial and Systems Engineering, Auburn University, Auburn, AL 36849, USA; Corresponding author at: Department of Mechanical Engineering, Tuskegee University, Tuskegee, AL 36088, USA.Understanding the impact of hybrid nanofluids (NF) on natural convection (NC) within complex enclosures can significantly advance the efficiency of heat transfer (HT) mechanisms. These advancements play a crucial role in various engineering applications, such as thermal systems in electronics, energy conversion, and heat exchangers. This study numerically examined the NC taking place within a sinusoidal corrugated enclosure filled with an Ag-MgO hybrid NF. This system was heated differentially by a vertical solid wall. The vertical right wall of the solid is maintained at an isothermal at a high-temperature Th, while the left vertical wall of the cavity is kept at an isothermal at a low-temperature Tc. The vertical left wall of the solid is in contact with the porous medium (PM) saturated with the cavity's hybrid NF. In contrast, the top and bottom horizontal walls are maintained adiabatic. The governing equations were solved by employing the Galerkin weighted residual finite elements approach. The porous domain is modeled by employing the Darcy-Brinkman formulation. The parameters being studied encompass the Darcy number (10−5 ≤ Da ≤ 10−2), Rayleigh number (103 ≤ Ra ≤ 106), nanoparticle volume fraction (0 ≤ ϕ ≤ 0.04), amplitude of waviness (0.05 ≤ A ≤ 0.2), and number of undulations (1 ≤ N ≤ 4). The results highlighted that the introduction of hybrid nanoparticles into the pure fluid enhances the HT rate across the parameter spectrum. The highest average Nusselt number (Nuav) is attained at Ra = 106, Da = 10−2, A = 0.2 and N = 4. The findings of the current study have practical implications for current industrial applications, particularly in the cooling of electronic devices.http://www.sciencedirect.com/science/article/pii/S2666202724000168Conjugate natural convectionCorrugated enclosurePorous mediumHybrid nanofluidsHeat transfer enhancement |
| spellingShingle | Zaid Al-Dulaimi Hakim T. Kadhim Malik F. Jaffer Ahmed Al-Manea Raed Al-Rbaihat Ali Alahmer Enhanced conjugate natural convection in a corrugated porous enclosure with Ag-MgO hybrid nanofluid International Journal of Thermofluids Conjugate natural convection Corrugated enclosure Porous medium Hybrid nanofluids Heat transfer enhancement |
| title | Enhanced conjugate natural convection in a corrugated porous enclosure with Ag-MgO hybrid nanofluid |
| title_full | Enhanced conjugate natural convection in a corrugated porous enclosure with Ag-MgO hybrid nanofluid |
| title_fullStr | Enhanced conjugate natural convection in a corrugated porous enclosure with Ag-MgO hybrid nanofluid |
| title_full_unstemmed | Enhanced conjugate natural convection in a corrugated porous enclosure with Ag-MgO hybrid nanofluid |
| title_short | Enhanced conjugate natural convection in a corrugated porous enclosure with Ag-MgO hybrid nanofluid |
| title_sort | enhanced conjugate natural convection in a corrugated porous enclosure with ag mgo hybrid nanofluid |
| topic | Conjugate natural convection Corrugated enclosure Porous medium Hybrid nanofluids Heat transfer enhancement |
| url | http://www.sciencedirect.com/science/article/pii/S2666202724000168 |
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