Numerical Analysis of Nanofluids in Differentially Heated Enclosure Undergoing Orthogonal Rotation
Natural convection heat transfer in a rotating, differentially heated enclosure is studied numerically in this paper. The rotating enclosure is filled with water-Ag, water-Cu, water-Al2O3, or water-TiO2 nanofluids. The governing equations are in velocity, pressure, and temperature formulation and so...
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Wiley
2014-01-01
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| Series: | Advances in Mathematical Physics |
| Online Access: | http://dx.doi.org/10.1155/2014/874132 |
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| author | H. Saleh I. Hashim |
| author_facet | H. Saleh I. Hashim |
| author_sort | H. Saleh |
| collection | DOAJ |
| description | Natural convection heat transfer in a rotating, differentially heated enclosure is studied numerically in this paper. The rotating enclosure is filled with water-Ag, water-Cu, water-Al2O3, or water-TiO2 nanofluids. The governing equations are in velocity, pressure, and temperature formulation and solved using the staggered grid arrangement together with MAC method. The governing parameters considered are the solid volume fraction, 0.0 ≤ ϕ ≤ 0.05, and the rotational speeds, 3.5≤ Ω ≤ 17.5 rpm, and the centrifugal force is smaller than the Coriolis force and both forces were kept below the buoyancy force. It is found that the angular locations of the local maximums heat transfer were sensitive to rotational speeds and nanoparticles concentration. The global quantity of heat transfer rate increases about 1.5%, 1.1%, 0.8%, and 0.6% by increasing 1% ϕ of the nanoparticles Ag, Cu, Al2O3, and TiO2, respectively, for the considered rotational speeds. |
| format | Article |
| id | doaj-art-70bb131ea2b746ce948fa9f548d2eb03 |
| institution | Kabale University |
| issn | 1687-9120 1687-9139 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
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| series | Advances in Mathematical Physics |
| spelling | doaj-art-70bb131ea2b746ce948fa9f548d2eb032025-02-03T01:20:47ZengWileyAdvances in Mathematical Physics1687-91201687-91392014-01-01201410.1155/2014/874132874132Numerical Analysis of Nanofluids in Differentially Heated Enclosure Undergoing Orthogonal RotationH. Saleh0I. Hashim1Centre for Modelling & Data Analysis, School of Mathematical Sciences, Universiti Kebangsaan Malaysia, UKM 43600 Bangi, Selangor, MalaysiaCentre for Modelling & Data Analysis, School of Mathematical Sciences, Universiti Kebangsaan Malaysia, UKM 43600 Bangi, Selangor, MalaysiaNatural convection heat transfer in a rotating, differentially heated enclosure is studied numerically in this paper. The rotating enclosure is filled with water-Ag, water-Cu, water-Al2O3, or water-TiO2 nanofluids. The governing equations are in velocity, pressure, and temperature formulation and solved using the staggered grid arrangement together with MAC method. The governing parameters considered are the solid volume fraction, 0.0 ≤ ϕ ≤ 0.05, and the rotational speeds, 3.5≤ Ω ≤ 17.5 rpm, and the centrifugal force is smaller than the Coriolis force and both forces were kept below the buoyancy force. It is found that the angular locations of the local maximums heat transfer were sensitive to rotational speeds and nanoparticles concentration. The global quantity of heat transfer rate increases about 1.5%, 1.1%, 0.8%, and 0.6% by increasing 1% ϕ of the nanoparticles Ag, Cu, Al2O3, and TiO2, respectively, for the considered rotational speeds.http://dx.doi.org/10.1155/2014/874132 |
| spellingShingle | H. Saleh I. Hashim Numerical Analysis of Nanofluids in Differentially Heated Enclosure Undergoing Orthogonal Rotation Advances in Mathematical Physics |
| title | Numerical Analysis of Nanofluids in Differentially Heated Enclosure Undergoing Orthogonal Rotation |
| title_full | Numerical Analysis of Nanofluids in Differentially Heated Enclosure Undergoing Orthogonal Rotation |
| title_fullStr | Numerical Analysis of Nanofluids in Differentially Heated Enclosure Undergoing Orthogonal Rotation |
| title_full_unstemmed | Numerical Analysis of Nanofluids in Differentially Heated Enclosure Undergoing Orthogonal Rotation |
| title_short | Numerical Analysis of Nanofluids in Differentially Heated Enclosure Undergoing Orthogonal Rotation |
| title_sort | numerical analysis of nanofluids in differentially heated enclosure undergoing orthogonal rotation |
| url | http://dx.doi.org/10.1155/2014/874132 |
| work_keys_str_mv | AT hsaleh numericalanalysisofnanofluidsindifferentiallyheatedenclosureundergoingorthogonalrotation AT ihashim numericalanalysisofnanofluidsindifferentiallyheatedenclosureundergoingorthogonalrotation |