2013 Articles
A Green's function formalism of energy and momentum transfer in fluctuational electrodynamics
Radiative energy and momentum transfer due to fluctuations of electromagnetic fields arising due to temperature difference between objects is described in terms of the cross-spectral densities of the electromagnetic fields. We derive relations between thermal non-equilibrium contributions to energy and momentum transfer and surface integrals of tangential components of the dyadic Green's functions of the vector Helmholtz equation. The expressions derived here are applicable to objects of arbitrary shapes, dielectric functions, as well as magnetic permeabilities. For the case of radiative transfer, we derive expressions for the generalized transmissivity and generalized conductance that are shown to obey reciprocity and agree with theory of black body radiative transfer in the appropriate limit.
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- 1-s2.0-S0022407313000101-main.pdf application/pdf 483 KB Download File
Also Published In
- Title
- Journal of Quantitative Spectroscopy and Radiative Transfer
- DOI
- https://doi.org/10.1016/j.jqsrt.2013.01.002
More About This Work
- Academic Units
- Mechanical Engineering
- Published Here
- July 11, 2013