Modeling near-field radiative heat transfer from sharp objects using a general 3d numerical scattering technique
Abstract
We examine the non-equilibrium radiative heat transfer between a plate and finite cylinders and cones, making the first accurate theoretical predictions for the total heat transfer and the spatial heat flux profile for three-dimensional compact objects including corners or tips. We find qualitatively different scaling laws for conical shapes at small separations, and in contrast to a flat/slightly-curved object, a sharp cone exhibits a local \emph{minimum} in the spatially resolved heat flux directly below the tip. The method we develop, in which a scattering-theory formulation of thermal transfer is combined with a boundary-element method for computing scattering matrices, can be applied to three-dimensional objects of arbitrary shape.
Cite
@article{arxiv.1107.2111,
title = {Modeling near-field radiative heat transfer from sharp objects using a general 3d numerical scattering technique},
author = {Alexander P. McCauley and M. T. Homer Reid and Matthias Krüger and Steven G. Johnson},
journal= {arXiv preprint arXiv:1107.2111},
year = {2015}
}
Comments
5 pages, 4 figures. Corrected background information in the introduction, results and discussion unchanged