Natural convection and surface thermal radiation in a tilted open shallow cavity



Título del documento: Natural convection and surface thermal radiation in a tilted open shallow cavity
Revista: Revista mexicana de física
Base de datos: PERIÓDICA
Número de sistema: 000350587
ISSN: 0035-001X
Autors: 1
Institucions: 1Universidad de Sonora, Hermosillo, Sonora. México
Any:
Període: Feb
Volum: 58
Número: 1
Paginació: 19-28
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico, teórico
Resumen en inglés In this paper the numerical calculations of heat transfer by natural convection and surface radiation in a tilted open shallow cavity are presented. The cavity maintains the opposite wall to the aperture at a constant temperature while the remaining walls are adiabatic. The results in the steady state are obtained for a Rayleigh number range from 105 to 107, inclination angles from 45± to 135± and aspect ratios equal to 2 and 4. It was found that the exchange of thermal radiation between walls is considerably more relevant that the convective phenomenon for an inclination angle of 135±. Oscillations in the convective Nusselt number were observed for inclination angles of 45± (AR=4) and 90± (AR of 2 and 4) caused by the formation of thermal plumes in the bottom adiabatic wall that travel and mix with the thermal layer of the hot wall
Disciplines Física y astronomía
Paraules clau: Electromagnetismo,
Cavidad abierta,
Convección natural,
Radiación térmica,
Transferencia de calor
Keyword: Physics and astronomy,
Electromagnetism,
Open cavity,
Natural convection,
Thermal radiation,
Heat transfer
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