The viscosity and diffusion coefficients of eighteen binary gaseous systems

J. Kestin, H. E. Khalifa, S. T. Ro, W. A. Wakeham

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132 Scopus citations


The paper reports accurate measurements of the viscosity of the eighteen binary gaseous systems: CF4 with He, Ne, Ar, N2, CO2, CH4; SF6 with He, Ne, Ar, N2, CO2, CH4, CF4 and O2 with He, Ne, CO2, CF4, SF6. The measurements were performed in a high-precision oscillating-disk viscometer at atmospheric pressure and in the temperature range 25-200°C for the systems containing CH4 or SF6 and in the temperature range 25-400°C for the remainder. The reported viscosities are believed to be accurate to within ±0.1% at room temperature and to within ±0.2% at 400°C. It is shown that the data conform to the extended law of corresponding states developed by Kestin, Ro and Wakeham despite the complexity of some of the component gases. The standard deviation between the experimental values and those calculated from the law of corresponding states is only 0.3% which is commensurate with the uncertainty in the experimental results. Binary diffusion coefficients derived from the mixture viscosity data are also presented; they have an estimated uncertainty of ±2%.

Original languageEnglish (US)
Pages (from-to)242-260
Number of pages19
JournalPhysica A: Statistical Mechanics and its Applications
Issue number2
StatePublished - Aug 1977

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability


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