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Details van artikel 44 van 86 gevonden artikelen
| Titel: |
Effect of Sinusoidal Distribution of the Temperature on Laminar Natural Convection in Wavy Rectangular Enclosures |
| Auteur: |
A. Sabeur-Bendehina L. Adjlout O. Imine |
| Verschenen in: |
Journal of applied sciences |
| Paginering: | Jaargang 6 (2006) nr. 3 pagina's 710-715 |
| Jaar: |
2006 |
| Inhoud: |
In the present research, a numerical study of the effect of non uniform boundary conditions on the heat transfer by natural convection in rectangular cavities was investigated for the laminar regime. This problem was solved by using the partial differential equations which are the equation of mass, momentum and energy. The aspect ratio of the cavities has also been changed. The tests were performed for different boundary conditions and different Rayleigh numbers while the Prandtl number was kept constant. The configurations with one and three undulations for the hot wall geometry were tested in a laminar regime. For the vertical walls, a non uniform sinusoidal distributions are adopted.The results obtained show that the trend of the local Nusselt number is wavy for all aspect ratios investigated. The mean Nusselt number decreases comparing with the Nusselt number of the rectangular cavity. The sinusoidal function of the temperature distribution in both vertical walls increases the local and the mean Nusselt number comparing with the isotherm walls. Non uniform boundary conditions seem to increase the heat transfer rate. However, increasing aspect ratio results in a decrease of the Nusselt number. |
| Uitgever: |
Asian Network for Scientific Information (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 44 van 86 gevonden artikelen
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