A Finite-Volume Method for Predicting a Radiant Heat Transfer in Enclosures With Participating Media

1990 ◽  
Vol 112 (2) ◽  
pp. 415-423 ◽  
Author(s):  
G. D. Raithby ◽  
E. H. Chui
Keyword(s):  
Heat Transfer ◽  
Finite Volume Method ◽  
Finite Volume ◽  
Radiant Heat ◽  
Computational Grids ◽  
Benchmark Problems ◽  
Radiant Heat Transfer ◽  
Test Results ◽  
Participating Media ◽  
Volume Method

A new “finite-volume” method is proposed to predict radiant heat transfer in enclosures with participating media. The method can conceptually be applied with the same nonorthogonal computational grids used to compute fluid flow and convective heat transfer. A fairly general version of the method is derived, and details are illustrated by applying it to several simple benchmark problems. Test results indicate that good accuracy is obtained on coarse computational grids, and that solution errors diminish rapidly as the grid is refined.

Radiant Heat Transfer in Nitrogen-Free Combustion Environments

2018 ◽  
Vol 19 (2) ◽  
pp. 175-188
Author(s):  
A. Marzouk Osama
Keyword(s):  
Heat Transfer ◽  
Gaseous Mixture ◽  
Radiant Heat ◽  
Benchmark Problems ◽  
Radiant Heat Transfer ◽  
Discrete Ordinate ◽  
Combustion Gases ◽  
Directional Radiation ◽  
Equivalent Effect ◽  
Volume Method

AbstractWhen mathematically calculating the radiant heat flux during combustion, the radiant property of a gaseous mixture can be approximated as a weighted sum of the radiant properties of fictitious gases to give an equivalent effect of the actual gas mixture. This concept has been in use for many years. However, it was initially tailored to product gases in air-combustion environment. With the advent and progress in nitrogen-free combustion (particularly for environmental purposes), the chemical composition of the combustion gases is highly altered and existing models should be assessed for their suitability in these new environments. We carried out this task, which was motivated by our recent modeling work that revealed that a new model should be developed for nitrogen-free combustion environments. The model proposed here has four participating gases plus one transparent gas and its performance in predicting radiant heat transfer in 3D benchmark problems is evaluated in comparison with existing models, using the discrete-ordinate method for directional radiation domain combined with the finite-volume method of the spatial domain.

Modeling of Radiation of Participating Media with Coupled Finite Volume Method

2007 ◽  
Vol 21 (1) ◽  
pp. 239-243
Author(s):  
Guobiao Cai ◽  
Xiaoying Zhang ◽  
Ding-Qiang Zhu
Keyword(s):  
Finite Volume Method ◽  
Finite Volume ◽  
Participating Media ◽  
Volume Method
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