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First Thermal and Fluids Engineering Summer Conference

ISSN: 2379-1748
ISBN: 978-1-56700-430-4

CONTINUUM RADIATIVE HEAT TRANSFER MODELING IN MULTI-COMPONENT ANISOTROPIC MEDIA IN THE LIMIT OF GEOMETRICAL OPTICS

DOI: 10.1615/TFESC1.prm.013198
pages 2229-2232

Wojciech Lipinski
Research School of Engineering, The Australian National University, Canberra, ACT 2601, Australia

Sophia Haussener
School of Engineering, Institute of Mechanical Engineering, EPFL, Lausanne, Switzerland


KEY WORDS: radiation, participating media, complex media, geometrical optics, modeling

Abstract

Continuum-scale equations of radiative transfer and corresponding boundary conditions are derived for a multi-component anisotropic medium consisting of components in the range of geometrical optics. The derivations are obtained by employing the volume-averaging theory. This study generalizes the previous derivations obtained for multi-component isotropic media. The theory presented is applied to radiatively characterize an example two-component anisotropic medium that finds application in solar energy conversion. Its directional, continuum-scale radiative properties are calculated by incorporating the exact morphology obtained by computed tomography. The continuum-scale properties are compared to those predicted assuming an isotropic medium.

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