ARTICLE:

• ANALYSIS OF RADIATIVE HEAT TRANSFER IN ENCLOSURES OF COMPLEX GEOMETRY USING THE DISCRETE ORDINATES METHOD  download article

Andre Charette
Research Group in Processes and Systems Engineering, Université du Québec à Chicoutimi, Québec, Canada

M. Sakami
Groupe de Recherche en Ingénierie des Procédés et Systémes,Département des Sciences Appliquees, Universite du Québec a Chicoutimi,555, boulevard de l'université, Chicoutimi, G7H 2B1, Quebec, Canada

V. Le dez
Laboratoire d'Etudes Thermiques, E.N.S.M.A, (URA 1403) B.P 109 86960 Futuroscope, France

ABSTRACT

This paper presents a new discrete ordinates algorithm for the numerical treatment of radiative participating media in both two and three-dimensional enclosures. The algorithm is based on the utilization of general characteristic relations in lieu of the traditional differencing schemes for the spatial marching procedure. It is ideally suited for the treatment of complex geometries, the grid being formed from triangles (2D) or tetrahedra (3D). The method uses the techniques for recognition of neighboring cells and is exempt of any numerical oscillation. The mathematical derivation is detailed in the text and several examples are given, some in regular geometries, others in more complex enclosures. The method proves to be very accurate and of great flexibility.

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