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International Journal of Thermophysics

, Volume 10, Issue 2, pp 417–426 | Cite as

A simplified representation for the thermal conductivity of fluids in the critical region

  • G. A. Olchowy
  • J. V. Sengers
Article

Abstract

A practical representation for the critical thermal conductivity enhancement is developed by incorporating a finite cutoff into the asymptotic mode-coupling integrals for the diffusivity associated with the critical fluctuations. This procedure yields a simplified approximation to a more complete nonasymptotic solution of the mode-coupling integrals obtained by us earlier. A comparison is made with thermal conductivity data for carbon dioxide, ethane, and methane.

Key words

carbon dioxide critical phenomena ethane methane thermal conductivity thermal diffusivity 

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Copyright information

© Plenum Publishing Corporation 1989

Authors and Affiliations

  • G. A. Olchowy
    • 1
  • J. V. Sengers
    • 1
    • 2
  1. 1.Institute for Physical Science and TechnologyUniversity of MarylandCollege ParkUSA
  2. 2.Thermophysics DivisionNational Institute of Standards and TechnologyGaithersburgUSA

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