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NUMERICAL SIMULATION OF HEAT TRANSFER IN A SEMI-CYLINDRICAL CAVITY WITH DIFFERENT HEATING MODELS

Kherrour, S.; Zarrit, R.; Boutina, L.; Bensaha, H.
Abstract:
The present article reports numerical results of laminar natural convection heat transfer within an air filled semi cylindrical cavity with its horizontal walls submitted to different heating models. In this work, the horizontal surface is maintained at constant temperatures Tc (Dirichlet condition) or heat fluxes q (Newman condition), while that of the opposite surface is considered at cold temperature Tf. The parameters governing the problem are the Rayleigh number (103 < Ra < 106), and the Prandtl number (Pr = 0.71). The effect of thermal boundary condition on fluid flow and heat transfer is examined in the two cases. The comparison of the constant temperature and constant heating conditions lead to a strong change in the flow structure and the corresponding heat transfer. It is noted that with the increase in the number of Rayleigh, the intensity of the recirculation inside the enclosure increases.
SGEM Research areas:
Year:
2018
Type of Publication:
In Proceedings
Keywords:
Laminar natural convection; semi cylindrical cavity; Dirichlet condition; Newman condition; Rayleigh number
Volume:
18
SGEM Book title:
18th International Multidisciplinary Scientific GeoConference SGEM2018
Book number:
4.3
SGEM Series:
International Multidisciplinary Scientific GeoConference-SGEM
Pages:
511-518
Publisher address:
51 Alexander Malinov blvd, Sofia, 1712, Bulgaria
SGEM supporters:
Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
Period:
3 – 6 December, 2018
ISBN:
978-619-7408-70-6
ISSN:
1314-2704
Conference:
18th International Multidisciplinary Scientific GeoConference SGEM2018, 3 – 6 December, 2018
DOI:
10.5593/sgem2018V/4.3/S11.061
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