Three-Dimensional Laminar Natural Convection in an Inclined Air Slot With Hexagonal Honeycomb Core

[+] Author and Article Information
Y. Asako, H. Nakamura, Z. Chen

Department of Mechanical Engineering, Tokyo Metropolitan University, Tokyo, 192-03 Japan

M. Faghri

Department of Mechanical Engineering, University of Rhode Island, Kingston, RI 02881

J. Heat Transfer 113(4), 906-911 (Nov 01, 1991) (6 pages) doi:10.1115/1.2911220 History: Received July 23, 1990; Revised May 13, 1991; Online May 23, 2008


Numerical solutions are obtained for a three-dimensional natural convection heat transfer problem in an inclined air slot with a hexagonal honeycomb core. The air slot is assumed to be long and wide such that the velocity and temperature fields repeat themselves in successive enclosures. The numerical methodology is based on an algebraic coordinate transformation technique, which maps the complex cross section onto a rectangle, coupled with a calculation procedure for fully elliptic three-dimensional flows. The calculations are performed for Rayleigh numbers in the range of 103 to 105 , inclination angles in the range of −90 to 80 deg, Prandtl number of 0.7, and for five values of the aspect ratio. Three types of thermal boundary condition for the honeycomb side walls are considered. The average Nusselt number results are compared with those for a rectangular two-dimensional enclosure.

Copyright © 1991 by The American Society of Mechanical Engineers
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