Onset of convection in a dielectric nanofluid saturated anisotropic porous medium
The onset of thermal convection in a horizontal layer of a dielectric nanofluid saturated an anisotropic porous medium with vertical AC(alternate current) electric field has been studied. We considered Darcy model for porous medium while for nanofluid model used, it incorporates the effects of therm...
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| Format: | Article |
| Language: | English |
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Academy of Sciences Malaysia
2019
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| Online Access: | http://psasir.upm.edu.my/id/eprint/81547/ http://psasir.upm.edu.my/id/eprint/81547/1/NANO.pdf |
| _version_ | 1848859131142733824 |
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| author | Shamsudin, Nur Aisyah Maisara Mohd Mokhtar, Nor Fadzillah |
| author_facet | Shamsudin, Nur Aisyah Maisara Mohd Mokhtar, Nor Fadzillah |
| author_sort | Shamsudin, Nur Aisyah Maisara |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The onset of thermal convection in a horizontal layer of a dielectric nanofluid saturated an anisotropic porous medium with vertical AC(alternate current) electric field has been studied. We considered Darcy model for porous medium while for nanofluid model used, it incorporates the effects of thermophoresis, electrophoresis and Brownian motion. A linear stability analysis based upon a normal mode has been performed, and the expression of thermal Rayleigh
number is obtained using the Galerkin method. The results show that an increase value of AC electric Rayleigh number, Re and mechanical anisotropy parameter, ξ is to destabilize the system of nanofluid layer while the thermal anisotropy parameter, η has stabilizing effect on the onset of electroconvection. |
| first_indexed | 2025-11-15T12:24:27Z |
| format | Article |
| id | upm-81547 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T12:24:27Z |
| publishDate | 2019 |
| publisher | Academy of Sciences Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-815472021-05-07T03:38:52Z http://psasir.upm.edu.my/id/eprint/81547/ Onset of convection in a dielectric nanofluid saturated anisotropic porous medium Shamsudin, Nur Aisyah Maisara Mohd Mokhtar, Nor Fadzillah The onset of thermal convection in a horizontal layer of a dielectric nanofluid saturated an anisotropic porous medium with vertical AC(alternate current) electric field has been studied. We considered Darcy model for porous medium while for nanofluid model used, it incorporates the effects of thermophoresis, electrophoresis and Brownian motion. A linear stability analysis based upon a normal mode has been performed, and the expression of thermal Rayleigh number is obtained using the Galerkin method. The results show that an increase value of AC electric Rayleigh number, Re and mechanical anisotropy parameter, ξ is to destabilize the system of nanofluid layer while the thermal anisotropy parameter, η has stabilizing effect on the onset of electroconvection. Academy of Sciences Malaysia 2019 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/81547/1/NANO.pdf Shamsudin, Nur Aisyah Maisara and Mohd Mokhtar, Nor Fadzillah (2019) Onset of convection in a dielectric nanofluid saturated anisotropic porous medium. ASM Science Journal, 12 (spec. 1). pp. 108-116. ISSN 1823-6782; ESSN: 2682-8901 https://www.akademisains.gov.my/asmsj/asm-sc-j-12-special-issue-1-2019-for-iqrac2018/ |
| spellingShingle | Shamsudin, Nur Aisyah Maisara Mohd Mokhtar, Nor Fadzillah Onset of convection in a dielectric nanofluid saturated anisotropic porous medium |
| title | Onset of convection in a dielectric nanofluid saturated anisotropic porous medium |
| title_full | Onset of convection in a dielectric nanofluid saturated anisotropic porous medium |
| title_fullStr | Onset of convection in a dielectric nanofluid saturated anisotropic porous medium |
| title_full_unstemmed | Onset of convection in a dielectric nanofluid saturated anisotropic porous medium |
| title_short | Onset of convection in a dielectric nanofluid saturated anisotropic porous medium |
| title_sort | onset of convection in a dielectric nanofluid saturated anisotropic porous medium |
| url | http://psasir.upm.edu.my/id/eprint/81547/ http://psasir.upm.edu.my/id/eprint/81547/ http://psasir.upm.edu.my/id/eprint/81547/1/NANO.pdf |