Radiative heat transfer in a participating medium with specular-diffuse surfaces

Hong Liang Yi, Bing Zhen, He Ping Tan, Wai Cheung Timothy Tong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)


The results obtained by ray-tracing method can be regarded as benchmarks for its good accuracy. However, up to now, this method can be only used to solve radiative transfer within medium confined between two specular surfaces or two diffuse surfaces. This article proposes a hybrid ray-tracing method to solve the radiative transfer inside a plane-parallel absorbing-emitting-scattering medium with one specular surface and another diffuse surface (S-D surfaces). By the hybrid ray-tracing method, radiative transfer coefficients (RTCs) for S-D surfaces are deduced. Both surfaces of the medium under consideration are considered to be semitransparent or opaque. This paper examines the effects of scattering albedo, opaque surface emissivity and anisotropically scattering on steady-state heat flux and transient temperature fields. From the results it is found that the effects of anisotropic scattering is more for a bigger optical thickness medium; and keeping other optical parameters unchanged, anisotropic scattering affects transient temperature distributions so much in a small refractive index medium.
Original languageEnglish
Pages (from-to)4229-4235
Number of pages7
JournalInternational Journal of Heat and Mass Transfer
Issue number19-20
Publication statusPublished - 1 Sept 2009


  • Anisotropic scattering
  • Hybrid ray-tracing method
  • Radiative transfer coefficients

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes


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