Application of the discrete ordinates method to combined conductive and radiative heat transfer in a two-dimensional complex geometry

1996 ◽  
Vol 56 (4) ◽  
pp. 517-533 ◽  
Author(s):  
M. Sakami ◽  
A. Charette ◽  
V. Le Dez
Keyword(s):  
Heat Transfer ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Complex Geometry ◽  
Discrete Ordinates ◽  
Two Dimensional ◽  
Discrete Ordinates Method

Analysis of Radiative Heat Transfer in Complex Two-Dimensional Enclosures With Obstacles Using the Modified Discrete Ordinates Method

2001 ◽  
Vol 123 (5) ◽  
pp. 892-900 ◽  
Author(s):  
M. Sakami ◽  
A. El Kasmi ◽  
A. Charette
Keyword(s):  
Heat Transfer ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Discrete Ordinates ◽  
Solid Boundary ◽  
Two Dimensional ◽  
Discrete Ordinates Method ◽  
Radiative Intensity ◽  
The Media

In this work, an extension of a modified discrete ordinates method recently proposed by other researchers is presented. It is intended to counter the ray effect inherent in this method. The media analyzed are absorbing, emitting and isotropically or anisotropically scattering and the enclosure geometry is arbitrary. Cases with obstructions are emphasized. The radiative intensity is broken into two parts: the wall-related intensity and the medium-related intensity. The former is treated separately by rigorous integration over the entire solid boundary. A new differencing scheme based on quadrangular grids is also proposed and used for the treatment of the medium-related intensity. Results confirm that the proposed method is a good general remedy for anomalies caused by the ray effect due to the geometry.

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