Thermal conductivity of granular materials relevant to the thermal evolution of cometary nuclei

Details Thermal conductivity of granular materials relevant to the thermal evolution of cometary nuclei Thermal conductivity of granular materials relevant to the thermal evolution of cometary nuclei

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997p%26ss...45..827s&link_type=abstract

Planetary and Space Science, v. 45, p. 827-834.

Computer Science

12

Scientific paper

A formula is presented for the thermal conductivity of porous granular materials on the basis of the effective medium theory. The theory is also used to derive thermal conductivity of a mixture of amorphous and crystalline ices. The results are applied to the study of thermal evolution of a cometary nucleus, in which each of the grains has a silicate core and an amorphous H2O icy mantle initially. It is shown that for such pure-H2O comets, H2O ice crystallizes almost completely independent of porosity and contact area between adjacent grains.

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