000184810 001__ 184810
000184810 005__ 20190316235559.0
000184810 022__ $$a0022-4073
000184810 0247_ $$2doi$$a10.1016/j.jqsrt.2011.01.025
000184810 037__ $$aARTICLE
000184810 245__ $$aDiscrete vs continuum level simulation of radiative transfer in semitransparent two-phase media
000184810 269__ $$a2011
000184810 260__ $$bElsevier$$c2011
000184810 336__ $$aJournal Articles
000184810 520__ $$aThe mathematical formulation of the continuum approach to radiative transfer modeling in two-phase semi-transparent media is numerically validated by comparing radiative fluxes computed by (i) direct, discrete-scale and (ii) continuum-scale approaches. The analysis is based on geometrical optics. The discrete-scale approach uses the Monte Carlo ray-tracing applied directly to real 3D geometry measured by computed tomography. The continuum-scale approach is based on a set of continuum-scale radiative transfer equations and associated radiative properties, and employs the Monte Carlo ray-tracing for computations of radiative fluxes and for computations of the radiative properties. The model two-phase media are reticulate porous ceramics and a particle packed bed, each composed of semitransparent solid and fluid phases. The results obtained by the two approaches are in good agreement within the limits of statistical uncertainty. The continuum-scale approach leads to a reduction in computational time by approximately one order of magnitude, and is therefore suited to treat radiative transfer problems in two-phase media in a wide range of engineering applications.
000184810 700__ $$aPetrasch, J.
000184810 700__ $$0247143$$g207354$$aHaussener, S.
000184810 700__ $$aLipiński, W.
000184810 773__ $$j112$$tJournal of Quantitative Spectroscopy and Radiative Transfer$$k9$$q1450-1459
000184810 8564_ $$uhttps://infoscience.epfl.ch/record/184810/files/JQSRT_DiscretevsContinuum.pdf$$zn/a$$s547194$$yn/a
000184810 909C0 $$xU12656$$0252472$$pLRESE
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000184810 917Z8 $$x207354
000184810 917Z8 $$x148230
000184810 937__ $$aEPFL-ARTICLE-184810
000184810 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000184810 970__ $$apetrasch2010/LRESE
000184810 980__ $$aARTICLE