Small distance expansion for radiative heat transfer between curved objects
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Kardar_Small distance.pdf
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Author(s)
Golyk, Vladyslav A.
Krueger, Matthias Helmut Guenter
McCauley, Alexander Patrick
Kardar, Mehran
Date Issued
February 2013
Journal
EPL (Europhysics Letters)
Publisher
Institute of Physics Publishing
Citation
Golyk, Vladyslav A., Matthias Krüger, Alexander P. McCauley, and Mehran Kardar. “Small Distance Expansion for Radiative Heat Transfer Between Curved Objects.” EPL (Europhysics Letters) 101, no. 3 (February 1, 2013): 34002.
Version
Author's final manuscript
Abstract
We develop a small distance expansion for the radiative heat transfer between gently curved objects, in terms of the ratio of distance to radius of curvature. A gradient expansion allows us to go beyond the lowest-order proximity transfer approximation. The range of validity of such expansion depends on temperature as well as material properties. Generally, the expansion converges faster for the derivative of the transfer than for the transfer itself, which we use by introducing a near-field adjusted plot. For the case of a sphere and a plate, the logarithmic correction to the leading term has a very small prefactor for all materials investigated.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1209/0295-5075/101/34002
