Abstract
Recent accurate measurements of the self-diffusion coefficient for n-hexadecane and n-octane and of the viscosity coefficient for n-heptane, n-nonane, and n-undecane over wide pressure ranges have been used to provide a critical test of a previously described method, based on consideration of hard-sphere theory, for the correlation of transport coefficient data. It is found that changes are required to the universal curve for the reduced viscosity coefficient as a function of reduced volume and, also, to the parameters R D, R η , and R λ which were introduced to account for effects of nonspherical molecular shape. The scheme now accounts most satisfactorily for the self-diffusion, viscosity, and thermal conductivity coefficient data for all n-alkanes from methane to hexadecane at densities greater than the critical density.
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Assael, M.J., Dymond, J.H., Papadaki, M. et al. Correlation and prediction of dense fluid transport coefficients. I. n-alkanes. Int J Thermophys 13, 269–281 (1992). https://doi.org/10.1007/BF00504436
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DOI: https://doi.org/10.1007/BF00504436
Key words
- diffusion
- hard-sphere theory
- n-alkanes
- thermal conductivity
- viscosity