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International Heat Transfer Conference 9

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

THREE-DIMENSIONAL STUDY OF CONVECTION-RADIATION INTERACTIONS IN A CUBICAL ENCLOSURE FIELD WITH A NON-GRAY GAS

Toru Fusegi
Institute of Computational Fluid Dynamics, Tokyo 152, Japan; Department of Mechanical Engineering and Mechanics Drexel University Philadelphia, PA 19104, USA

Katsuya Ishii
Drexel University, Philadelphia, Pennsylvania 19104, USA

Bakhtier Farouk
Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania 19104, USA

Kunio Kuwahara
The Institute of Space and Astronautical Science Yoshinodai, Sagamihara-shi, Kanagawa 229-8510, Japan

DOI: 10.1615/IHTC9.4070
pages 421-426

Abstrakt

A three-dimensional numerical study was performed on interactions of natural convection and radiation in a cubical enclosure filled with a non-gray gas. The enclosure was heated differentially by a set of opposing side walls. The remaining surfaces were thermally insulated. Gas radiation was analyzed by the P1-differential approximation method and the Weighted Sum of Gray Gas model. Computations were carried out for Rayleigh numbers of 1.67×l05 and 4.5×l06. The Prandtl number and the overheat ratio were held fixed at 0.68 and 1.0, respectively. The solutions were compared with previously obtained two-dimensional results. Three-dimensional characteristics of the flow and temperature fields were investigated.

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