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Transient radiation and conduction heat transfer inside a plane-parallel participating gray medium with boundaries having different reflecting characteristics

Authors
Journal
Journal of Quantitative Spectroscopy and Radiative Transfer
0022-4073
Publisher
Elsevier
Publication Date
Volume
110
Issue
18
Identifiers
DOI: 10.1016/j.jqsrt.2009.06.003
Keywords
  • Transient Radiation And Conduction Heat Transfer
  • Plane-Parallel Participating Gray Medium
  • Specular And Diffuse Surfaces
  • Radiative Transfer Coefficients
  • Hybrid Ray-Tracing Method

Abstract

Abstract A hybrid ray-tracing method is developed for the solution to the radiative transfer in a plane-parallel participating medium having one specular surface and another diffuse surface. By this method, radiative transfer coefficients (RTCs) for specular–diffuse (S–D) surfaces are deduced. The medium surfaces are considered to be semitransparent. The effects of convection–radiation parameter, conduction–radiation parameter and refractive index on transient coupled heat transfer are investigated. Results show that the temperature curves of the medium having S–D surfaces is higher than those of the medium having S–S surfaces (two specular surfaces); the total heat flux at steady state for the S–D surfaces is lower than that for the S–S surfaces.

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