Nongray radiative heat transfer in high- temperature nonisothermal CO2-N2 mixtures

1969 ◽  
Author(s):  
R. BOUGHNER ◽  
C. OLIVER
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Radiative Heat Transfer ◽  
Radiative Heat

scholarly journals The Treatment of Nongray Properties in Radiative Heat Transfer: From Past to Present

2013 ◽  
Vol 135 (6) ◽  
Author(s):  
Michael F. Modest
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Radiative Heat Transfer ◽  
Historical Development ◽  
Radiative Heat ◽  
State Of The Art ◽  
Participating Media ◽  
Box Models ◽  
Property Data ◽  
Gradual Development

Radiative heat transfer in high-temperature participating media displays very strong spectral, or “nongray,” behavior, which is both very difficult to characterize and to evaluate. This has led to very gradual development of nongray models, starting with primitive semigray and box models based on old experimental property data, to today's state-of-the-art k-distribution approaches with properties obtained from high-resolution spectroscopic databases. In this paper a brief review of the historical development of nongray models and property databases is given, culminating with a more detailed description of the most modern spectral tools.

scholarly journals Evaluation of Radiative Heat Transfer in High-Temperature Porous Insulation Materials by Using Diffusion Approximation

Netsu Bussei ◽  
2015 ◽  
Vol 28 (4) ◽  
pp. 179-184 ◽  
Author(s):  
Tatsuya Kobari ◽  
Junnosuke Okajima ◽  
Atsuki Komiya ◽  
Shigenao Maruyama
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Radiative Heat Transfer ◽  
Diffusion Approximation ◽  
Radiative Heat ◽  
Insulation Materials

Importance of Combined Lorentz-Doppler Broadening in High-Temperature Radiative Heat Transfer Applications

2004 ◽  
Vol 126 (5) ◽  
pp. 858-861 ◽  
Author(s):  
Anquan Wang ◽  
Michael F. Modest
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Critical Temperature ◽  
Absorption Coefficient ◽  
Radiative Heat Transfer ◽  
Total Pressure ◽  
Radiative Heat ◽  
Narrow Band ◽  
Spectral Lines ◽  
Doppler Broadening

The importance of combined Lorentz-Doppler (or Voigt) broadening of spectral lines in high-temperature radiative heat transfer applications is investigated. Employing narrow-band transmissivities as the criterion, the critical total pressure below which, and the critical temperature above which Doppler broadening has a significant effect on the absorption coefficient is established for gaseous H2O and CO2.

Nongray radiative heat transfer in high- temperature nonisothermal CO2-N2 mixtures

AIAA Journal ◽  
1970 ◽  
Vol 8 (11) ◽  
pp. 2011-2016 ◽  
Author(s):  
ROBERT E. BOUGHNER ◽  
CALVIN C. OLIVER
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Radiative Heat Transfer ◽  
Radiative Heat
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