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Radiation Heat Transfer in Porous Materials

Published online by Cambridge University Press:  31 January 2011

Valery Shklover
Affiliation:
v.shklover@mat.ethz.ch, ETH Zurich, Laboratory of crystallography, Zurich, Switzerland
Leonid Braginsky
Affiliation:
leonid.braginsky@mat.ethz.ch, ETH Zurich, Laboratory of Crystallography, Department of Materials, 8093 Zürich, Zürich, 8093, Switzerland
Matthew Mishrikey
Affiliation:
matthewm@ifh.ee.ethz.ch, ETH Zurich, Laboratory of Electromagnetic Fields and Microwave Electronics, Zurich, Switzerland
Christian Hafner
Affiliation:
christian.hafner@ifh.ee.ethz.ch, ETH Zurich, Laboratory of Electromagnetic Fields and Microwave Electronics, Zurich, Switzerland
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Abstract

The effect of porosity on the radiation component of the thermal conductivity of the thermal barrier coatings is studied. Heat transfer in the disordered porous structures as well as the porous photonic band-gap structures is investigated. The pores, which size is comparable with the characteristic radiation wavelength λmax=2897.8/T μm, were found to be most efficient obstacles for the heat radiation.

Type
Research Article
Copyright
Copyright © Materials Research Society 2009

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References

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6 Shklover, V. Braginsky, L. Witz, G. Mishrikey, M. and Hafner, Ch. J. Comutational & Theoretical Nanoscience 5, 862 (2008).CrossRefGoogle Scholar

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