Radiative transfer in spectrallydissimilar absorbingemittingscattering adjacent mediums
Abstract
The structure of a radiation field in a cylindrical medium having two regions of different, but uniform absorption and scattering coefficients is analyzed. Fundamental aspects of the problem are elucidated by considering the case of a gray medium. It is shown for example that, for unequal absorption coefficients in the two regions, both emission and absorption rates are discontinuous at the interface of the two regions, but the heat flux and incident radiation are continuous. As an application of the analysis, the influence on heat transfer of the spatial distribution of particles in a coalburning swirl combustor is investigated. In the example application, spectral calculations are performed spanning the broad frequency range of the thermal radiation spectrum.
 Publication:

AIAA, 16th Thermophysics Conference
 Pub Date:
 June 1981
 Bibcode:
 1981thph.confR....I
 Keywords:

 Combustion Chambers;
 Gray Gas;
 Radiation Absorption;
 Radiation Distribution;
 Radiative Heat Transfer;
 Scattering Coefficients;
 Thermal Radiation;
 Carbon Dioxide;
 Coal Utilization;
 Heat Flux;
 Incident Radiation;
 Interfaces;
 Spatial Distribution;
 Water Vapor;
 Fluid Mechanics and Heat Transfer