Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 0-89116-299-2

International Heat Transfer Conference 7
September, 6-10, 1982, Munich, Germany

A FINITE DIFFERENCE STUDY OF NATURAL CONVECTION IN COMPLEX ENCLOSURES

Get access (open in a dialog) DOI: 10.1615/IHTC7.3090
pages 183-188

Abstrakt

Laminar natural convection in a two dimensional partitioned enclosure was studied. The enclosure was a square enclosure with and without partitions which were two vertical walls, one each at floor and ceiling. The vertical side walls were isothermal, and all other surfaces were maintained adiabatic. An upwind finite difference scheme was used to solve the governing elliptic equations for a fully compressible buoyancy driven flow. Temperature, velocity, pressure and density fields under steady state conditions were obtained. Significant changes in flow patterns and isotherm contours were found when the Grashof number was varied over the range of 10 -108. Increasing partition size by enlarging its height or width decreased the average heat transfer across the enclosure. When partitions were set close to the cool wall,the total heat transfer was reduced. Maximum heat transfer occurred when the partitions were set slightly off the center of enclosure toward the hot wall.