Laminar natural convection heat transfer inside Fluid-filled, tilted square cavities cooled at one side and partially heated at the opposite side, is studied numerically. A computational code based on the SIMPLE-C algorithm is used for the solution of the system of mass, momentum, and energy transfer equations. Simulations are performed for a complete range of heater sizes and locations, Rayleigh numbers based on the side of the cavity from 10(3) to 10(7), Prandtl numbers from 0.7 to 700, and tilting angles of the enclosure from -75 degrees to +75 degrees, where negative angles correspond to configurations with the heater facing downwards. It is found that the heat transfer rate increases with increasing the Rayleigh and Prandtl numbers, and the size of the heater. In addition, for negative inclinations of the enclosure the amount of heat exchanged decreases with increasing the tilting angle, while for positive inclinations the heat transfer rate either increases or decreases according as the heater is located toward the top or the bottom of the cavity. Finally, as far as the heater location is specifically concerned, the heat transfer performance has a peak for intermediate positions, the higher are the Rayleigh and Prandtl numbers, as well as the tilting angle for positive inclinations, the closer to the bottom of the cavity is the optimum heater location for maximum heat removal. (C) 2009 Elsevier Masson SAS. All rights reserved.

Buoyant heat transport in fluids across tilted square cavities discretely heated at one side / Corcione, Massimo; Habib, Emanuele. - In: INTERNATIONAL JOURNAL OF THERMAL SCIENCES. - ISSN 1290-0729. - STAMPA. - 49:5(2010), pp. 797-808. [10.1016/j.ijthermalsci.2009.11.012]

Buoyant heat transport in fluids across tilted square cavities discretely heated at one side

CORCIONE, Massimo;HABIB, Emanuele
2010

Abstract

Laminar natural convection heat transfer inside Fluid-filled, tilted square cavities cooled at one side and partially heated at the opposite side, is studied numerically. A computational code based on the SIMPLE-C algorithm is used for the solution of the system of mass, momentum, and energy transfer equations. Simulations are performed for a complete range of heater sizes and locations, Rayleigh numbers based on the side of the cavity from 10(3) to 10(7), Prandtl numbers from 0.7 to 700, and tilting angles of the enclosure from -75 degrees to +75 degrees, where negative angles correspond to configurations with the heater facing downwards. It is found that the heat transfer rate increases with increasing the Rayleigh and Prandtl numbers, and the size of the heater. In addition, for negative inclinations of the enclosure the amount of heat exchanged decreases with increasing the tilting angle, while for positive inclinations the heat transfer rate either increases or decreases according as the heater is located toward the top or the bottom of the cavity. Finally, as far as the heater location is specifically concerned, the heat transfer performance has a peak for intermediate positions, the higher are the Rayleigh and Prandtl numbers, as well as the tilting angle for positive inclinations, the closer to the bottom of the cavity is the optimum heater location for maximum heat removal. (C) 2009 Elsevier Masson SAS. All rights reserved.
2010
dimensionless correlations; enclosure; natural convection; numerical analysis; partial heating
01 Pubblicazione su rivista::01a Articolo in rivista
Buoyant heat transport in fluids across tilted square cavities discretely heated at one side / Corcione, Massimo; Habib, Emanuele. - In: INTERNATIONAL JOURNAL OF THERMAL SCIENCES. - ISSN 1290-0729. - STAMPA. - 49:5(2010), pp. 797-808. [10.1016/j.ijthermalsci.2009.11.012]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/358891
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