Natural Convection in a Differentially Heated Square Enclosure with a Solid Polygon
The aim of the present numerical study is to analyze the conjugate natural convection heat transfer in a differentially heated square enclosure containing a conductive polygon object. The left wall is heated and the right wall is cooled, while the horizontal walls are kept adiabatic. The COMSOL Mult...
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/617492 |
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| author | R. Roslan H. Saleh I. Hashim |
| author_facet | R. Roslan H. Saleh I. Hashim |
| author_sort | R. Roslan |
| collection | DOAJ |
| description | The aim of the present numerical study is to analyze the conjugate natural convection heat transfer in a differentially heated square enclosure containing a conductive polygon object. The left wall is heated and the right wall is cooled, while the horizontal walls are kept adiabatic. The COMSOL Multiphysics software is applied to solve the dimensionless governing equations. The governing parameters considered are the polygon type, 3≤N≤∞, the horizontal position, 0.25≤X0≤0.75, the polygon size, 0≤A≤π/16, the thermal conductivity ratio, 0.1≤Kr≤10.0, and the Rayleigh number, 103≤Ra≤106. The critical size of the solid polygon was found exists at low conductivities. The heat transfer rate increases with the increase of the size of the solid polygon, until it reaches its maximum value. Here, the size of the solid polygon is reaches its critical value. Further, beyond this critical size of the solid polygon, will decrease the heat transfer rate. |
| format | Article |
| id | doaj-art-486a5c17eac44a2ca94ba964bd944b58 |
| institution | OA Journals |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-486a5c17eac44a2ca94ba964bd944b582025-08-20T02:17:39ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/617492617492Natural Convection in a Differentially Heated Square Enclosure with a Solid PolygonR. Roslan0H. Saleh1I. Hashim2Faculty of Science, Technology & Human Development, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor, MalaysiaSchool of Mathematical Sciences, Faculty of Science & Technology, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi Selangor, MalaysiaSchool of Mathematical Sciences, Faculty of Science & Technology, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi Selangor, MalaysiaThe aim of the present numerical study is to analyze the conjugate natural convection heat transfer in a differentially heated square enclosure containing a conductive polygon object. The left wall is heated and the right wall is cooled, while the horizontal walls are kept adiabatic. The COMSOL Multiphysics software is applied to solve the dimensionless governing equations. The governing parameters considered are the polygon type, 3≤N≤∞, the horizontal position, 0.25≤X0≤0.75, the polygon size, 0≤A≤π/16, the thermal conductivity ratio, 0.1≤Kr≤10.0, and the Rayleigh number, 103≤Ra≤106. The critical size of the solid polygon was found exists at low conductivities. The heat transfer rate increases with the increase of the size of the solid polygon, until it reaches its maximum value. Here, the size of the solid polygon is reaches its critical value. Further, beyond this critical size of the solid polygon, will decrease the heat transfer rate.http://dx.doi.org/10.1155/2014/617492 |
| spellingShingle | R. Roslan H. Saleh I. Hashim Natural Convection in a Differentially Heated Square Enclosure with a Solid Polygon The Scientific World Journal |
| title | Natural Convection in a Differentially Heated Square Enclosure with a Solid Polygon |
| title_full | Natural Convection in a Differentially Heated Square Enclosure with a Solid Polygon |
| title_fullStr | Natural Convection in a Differentially Heated Square Enclosure with a Solid Polygon |
| title_full_unstemmed | Natural Convection in a Differentially Heated Square Enclosure with a Solid Polygon |
| title_short | Natural Convection in a Differentially Heated Square Enclosure with a Solid Polygon |
| title_sort | natural convection in a differentially heated square enclosure with a solid polygon |
| url | http://dx.doi.org/10.1155/2014/617492 |
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