Diffusion coefficients of internal states for the calculation of thermal conductivity

John R. Ferron

Physica A: Statistical Mechanics and its Applications, 1990, vol. 166, issue 2, 325-337

Abstract: In studies of vibrational relaxation of nitrous oxide and of carbon dioxide, diffusion coefficients of the vibrationally excited species (D0) have been measured as functions of temperature. These results are used here to estimate diffusion coefficients for rotational (Drot) and vibrational energy (Dvib). The diffusivity of internal states (Dint), frequently applied in the calculation of thermal conductivity as a weighted, hyperbolic mean of Drot and Dvib, is compared with the same quantity inferred from experimental thermal conductivities. The mean value is accurate to at least 400 K for N2O and 800 K for CO2.

Date: 1990
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:166:y:1990:i:2:p:325-337

DOI: 10.1016/0378-4371(90)90019-O

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