COMBINED-MODE HEAT TRANSFER IN RADIATIVELY PARTICIPATING MEDIA USING THE DISCRETE EXCHANGE FACTOR METHOD WITH FINITE ELEMENTS

1990 ◽  
Author(s):  
C. Saltiel ◽  
Mohammad H. N. Naraghi
Keyword(s):  
Heat Transfer ◽  
Finite Elements ◽  
Participating Media ◽  
Exchange Factor ◽  
Factor Method ◽  
Combined Mode

Two-Dimensional, Combined-Mode Heat Transfer by Conduction, Convection, and Radiation in Emitting, Absorbing, and Scattering Media-Solution by Finite Elements

1984 ◽  
Vol 106 (2) ◽  
pp. 448-452 ◽  
Author(s):  
T. J. Chung ◽  
J. Y. Kim
Keyword(s):  
Heat Transfer ◽  
Reynolds Number ◽  
Finite Elements ◽  
Prandtl Number ◽  
Gaussian Quadrature ◽  
Two Dimensional ◽  
Scattering Media ◽  
Converging Channel ◽  
Isoparametric Finite Elements ◽  
Combined Mode

This paper is concerned with a two-dimensional analysis of combined mode heat transfer using finite elements. Conduction, convection, and radiation are coupled in the emitting, absorbing, and scattering medium. The standard Galerkin finite elements can be used if the product of Reynolds number and Prandtl number is equal to or less than 1000. It is shown that the two-dimensional heat flux integration can be efficiently performed via Gaussian quadrature applied to isoparametric finite elements where no limitations to optical thicknesses are imposed. Numerical results are demonstrated for a diverging or converging channel. It is observed that the radiation effect on the temperature profile is more significant in the diverging than in the converging channel. Effects of Reynolds number, Prandtl number, albedo, and optical thickness upon temperature distributions are also investigated.

Numerical investigation of heat transfer by natural convection and radiation in a cavity with participating media

2016 ◽  
Author(s):  
CRISTIAN URIEL MENDOZA CASTELLANOS ◽  
Jan Armengol ◽  
Carlos Salinas ◽  
Rafael Beicker Barbosa ◽  
Rogério Gonçalves dos Santos
Keyword(s):  
Heat Transfer ◽  
Natural Convection ◽  
Numerical Investigation ◽  
Participating Media
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