On the application of the exponential wide band model to the calculation of radiative heat transfer in one- and two-dimensional enclosures

2002 ◽  
Vol 45 (10) ◽  
pp. 2129-2139 ◽  
Author(s):  
Jochen Ströhle ◽  
Pedro J. Coelho
Keyword(s):  
Heat Transfer ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Wide Band ◽  
Band Model ◽  
Two Dimensional ◽  
Wide Band Model

Prediction of Radiative Heat Transfer in Industrial Equipment Using the Radiation Element Method

2001 ◽  
Vol 123 (4) ◽  
pp. 530-536 ◽  
Author(s):  
Zhixiong Guo ◽  
Shigenao Maruyama
Keyword(s):  
Heat Transfer ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Narrow Band ◽  
Particle Density ◽  
Three Dimensional ◽  
Wide Band ◽  
Band Model ◽  
Participating Media ◽  
Carbon Particles

The radiation element method by ray emission method, REM2, has been formulated to predict radiative heat transfer in three-dimensional arbitrary participating media with nongray and anisotropically scattering properties surrounded by opaque surfaces. To validate the method, benchmark comparisons were conducted against the existing several radiation methods in a rectangular three-dimensional media composed of a gas mixture of carbon dioxide and nitrogen and suspended carbon particles. Good agreements between the present method and the Monte Carlo method were found with several particle density variations, in which participating media of optical thin, medium, and thick were included. As a numerical example, the present method is applied to predict radiative heat transfer in a boiler model with nonisothermal combustion gas and carbon particles and diffuse surface wall. Elsasser narrow-band model as well as exponential wide-band model is adopted to consider the spectral character of CO2 and H2O gases. The distributions of heat flux and heat flux divergence in the boiler furnace are obtained. The difference of results between narrow-band and wide-band models is discussed. The effects of gas model, particle density, and anisotropic scattering are scrutinized.

Two-dimensional model of methane thermal decomposition reactors with radiative heat transfer and carbon particle growth

AIChE Journal ◽  
2011 ◽  
Vol 58 (8) ◽  
pp. 2545-2556 ◽  
Author(s):  
Cyril Caliot ◽  
Gilles Flamant ◽  
Giorgos Patrianakos ◽  
Margaritis Kostoglou ◽  
Athanasios G. Konstandopoulos
Keyword(s):  
Heat Transfer ◽  
Thermal Decomposition ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Carbon Particle ◽  
Particle Growth ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Two Dimensional Model
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