MHD natural convection in an enclosure from two semi-circular heaters on the bottom wall
A computational study of the thermal and dynamical behavior of fluid in an enclosure with two isothermal semi-circular heaters is presented. The top wall and the flat surfaces on bottom wall are adiabatic while the vertical walls are kept at lower temperature than the semi-circular heaters. The radi...
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| Format: | Article |
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Elsevier
2012
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| author | Saidur, Rahman |
| author_facet | Saidur, Rahman |
| author_sort | Saidur, Rahman |
| collection | UM |
| description | A computational study of the thermal and dynamical behavior of fluid in an enclosure with two isothermal semi-circular heaters is presented. The top wall and the flat surfaces on bottom wall are adiabatic while the vertical walls are kept at lower temperature than the semi-circular heaters. The radius of curvature of the semi-circular surfaces is chosen as one tenth of the cavity wall length. The governing equations are solved by the Galerkin weighted residual finite element method. The effect of magnetic field on the flow is another important parameter in this study. Numerical simulations were performed for several values of Rayleigh number (10 3≤ Ra ≤ 10 6), Hartmann number (0 ≤ Ha ≤ 50) and the distance between two semi-circular heaters (0.2 ≤ D ≤ 0.8). In all cases the Prandtl number is taken as 7. It is found that the distance between the semi-circular heaters is the most important parameter affecting the heat and fluid flow fields. In addition, Hartmann number was found to have an adverse affect on heat transfer. |
| first_indexed | 2024-03-06T05:16:27Z |
| format | Article |
| id | um.eprints-6285 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:16:27Z |
| publishDate | 2012 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | um.eprints-62852019-07-16T05:36:13Z http://eprints.um.edu.my/6285/ MHD natural convection in an enclosure from two semi-circular heaters on the bottom wall Saidur, Rahman TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery A computational study of the thermal and dynamical behavior of fluid in an enclosure with two isothermal semi-circular heaters is presented. The top wall and the flat surfaces on bottom wall are adiabatic while the vertical walls are kept at lower temperature than the semi-circular heaters. The radius of curvature of the semi-circular surfaces is chosen as one tenth of the cavity wall length. The governing equations are solved by the Galerkin weighted residual finite element method. The effect of magnetic field on the flow is another important parameter in this study. Numerical simulations were performed for several values of Rayleigh number (10 3≤ Ra ≤ 10 6), Hartmann number (0 ≤ Ha ≤ 50) and the distance between two semi-circular heaters (0.2 ≤ D ≤ 0.8). In all cases the Prandtl number is taken as 7. It is found that the distance between the semi-circular heaters is the most important parameter affecting the heat and fluid flow fields. In addition, Hartmann number was found to have an adverse affect on heat transfer. Elsevier 2012 Article PeerReviewed Saidur, Rahman (2012) MHD natural convection in an enclosure from two semi-circular heaters on the bottom wall. International Journal of Heat and Mass Transfer, 55 (7-8). pp. 1844-1854. ISSN 0017-9310, DOI https://doi.org/10.1016/j.ijheatmasstransfer.2011.11.037 <https://doi.org/10.1016/j.ijheatmasstransfer.2011.11.037>. http://ac.els-cdn.com/S0017931011006740/1-s2.0-S0017931011006740-main.pdf?_tid=263f277c-4023-11e2-812c-00000aab0f6c&acdnat=1354853228_a3baf29af3e2d31add7a938ea44cb67d 10.1016/j.ijheatmasstransfer.2011.11.037 |
| spellingShingle | TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery Saidur, Rahman MHD natural convection in an enclosure from two semi-circular heaters on the bottom wall |
| title | MHD natural convection in an enclosure from two semi-circular heaters on the bottom wall |
| title_full | MHD natural convection in an enclosure from two semi-circular heaters on the bottom wall |
| title_fullStr | MHD natural convection in an enclosure from two semi-circular heaters on the bottom wall |
| title_full_unstemmed | MHD natural convection in an enclosure from two semi-circular heaters on the bottom wall |
| title_short | MHD natural convection in an enclosure from two semi-circular heaters on the bottom wall |
| title_sort | mhd natural convection in an enclosure from two semi circular heaters on the bottom wall |
| topic | TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery |
| work_keys_str_mv | AT saidurrahman mhdnaturalconvectioninanenclosurefromtwosemicircularheatersonthebottomwall |