Lipiński, W.Keene, D.Haussener, S.Petrasch, J.2013-03-042013-03-042013-03-04201010.1016/j.jqsrt.2010.06.022https://infoscience.epfl.ch/handle/20.500.14299/90072Continuum-scale equations of radiative transfer and corresponding boundary conditions are derived for a general case of a multi-component medium consisting of arbitrary-type, non-isothermal and non-uniform components in the limit of geometrical optics. The link between the discrete and continuum scales is established by volume averaging of the discrete-scale equations of radiative transfer by applying the spatial averaging theorem. Precise definitions of the continuum-scale radiative properties are formulated while accounting for the radiative interactions between the components at their interfaces. Possible applications and simplifications of the presented general equations are discussed.RadiationVolume averagingContinuum modelingMulti-componentMulti-phasetext::journal::journal article::research article