Title: Photon tunneling heat transfer in particulate system: physical characteristics and homogenization theory
Abstract
Radiative transfer equation (RTE) is the commonly accepted continuum scale governing equation for radiative heat transfer in particulate system. However, its applicability is questionable for non-random, densely and regularly packed particulate systems, due to dependent scattering and strong correlation of particle locations that may largely violate the basic assumptions of the RTE. In this work, a new continuum approach is proposed for radiative heat transfer in a densely packed particulate system composed of optically large particles, which does not rely explicitly on the RTE. The continuum approach is verified through heat transfer simulation at particle scale, and demonstrated to have excellent performance in predicting the temperature distribution in dense particulate systems.
References
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