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Thermal conductivity of segregated ground ice
Author(s) -
Gavriliev Rev I.
Publication year - 2008
Publication title -
permafrost and periglacial processes
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.867
H-Index - 76
eISSN - 1099-1530
pISSN - 1045-6740
DOI - 10.1002/ppp.628
Subject(s) - thermal conductivity , geology , permafrost , convection , heat transfer , mechanics , thermal diffusivity , thermal , capillary action , thermodynamics , materials science , physics , oceanography
The thermal conductivity of segregated ice is theoretically estimated based on a model of porous ice with capillary (continuous) and closed cylindrical pores along the heat flow and with spherical air bubbles, taking into account the additional convective heat transfer by vapour diffusion in the bubbles. Calculations can be made on the basis of the Maxwell‐Rayleigh theory. It is shown that the calculated values of thermal conductivity for segregated ice are much higher than some previously published experimental values, probably due to some methodological shortcomings in the calculation and/or in the earlier experiments. Copyright © 2008 John Wiley & Sons, Ltd.