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Three-Dimensional Study of Natural Convection in a Horizontal Channel With Discrete Heaters on One of Its Vertical Walls

Gavara, Madhusudhana and Kanna, Parthasarathy Rajesh (2014) Three-Dimensional Study of Natural Convection in a Horizontal Channel With Discrete Heaters on One of Its Vertical Walls. In: HEAT TRANSFER ENGINEERING, 35 (14-15,). pp. 1235-1245.

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Official URL: http://dx.doi.org/10.1080/01457632.2013.876784

Abstract

Three-dimensional natural convection in a horizontal channel with an array of discrete flush-mounted heaters on one of its vertical walls is numerically studied. Effects of thermal conductivities of substrate and heaters and convection on outer sides of the channel walls on heat transfer are examined. The substrate affects heat transfer in a wider range of thermal conductivities than do the heaters. At lower heater thermal conductivities a higher heat portion is transferred by direct convection from the heaters to the adjacent coolant. However, higher substrate conductivity is associated with higher heat portion transferred through the substrate. The innermost heater column is found to become the hottest heater column due to the lower coolant accessibility. The heat transfer in the channel is strongly influenced by convection on the outer sides of the channel walls. Correlations are presented for dimensionless temperature maximum and average Nusselt number.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to the TAYLOR & FRANCIS INC, 520 CHESTNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Depositing User: Id for Latest eprints
Date Deposited: 24 Apr 2014 07:32
Last Modified: 24 Apr 2014 07:33
URI: http://eprints.iisc.ac.in/id/eprint/48898

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