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Diffusion coefficients of internal states for the calculation of thermal conductivity

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  • Ferron, John R.

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.

Suggested Citation

  • Ferron, John R., 1990. "Diffusion coefficients of internal states for the calculation of thermal conductivity," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 166(2), pages 325-337.
    • Handle: RePEc:eee:phsmap:v:166:y:1990:i:2:p:325-337
    DOI: 10.1016/0378-4371(90)90019-O
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    1. Hasbargen, Paul R. & Burke, Ronnie L., 1968. "Minnesota Farm Business Notes No. 506," Minnesota Farm Business Notes\Minnesota Farm Management Service Notes 163494, University of Minnesota, Department of Applied Economics.
    2. Uribe, F.J. & Mason, E.A. & Kestin, J., 1989. "A correlation scheme for the thermal conductivity of polyatomic gases at low density," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 156(1), pages 467-491.
    3. M.C. Kapoor & Rajan Saxena, 1980. "Transnational Firms and Indian Export-A Case of Engineering Industry in India," Foreign Trade Review, , vol. 15(3), pages 322-339, October.
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