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Entropy Scaling of Viscosity – I: A Case Study of Propane



Ian H. Bell


In this work a broadly-applicable and simple approach for developing high accuracy viscosity correlations yielding uncertainties approximately equal to the uncertainties of the underlying data is presented. The approach is based on the combination of a number of recent insights related to the use of residual entropy scaling. The use of residual entropy as the independent variable ensures a model formulation that can provide guaranteed extrapolation behavior (barring errors in the equation of state itself), and provides reasonable predictions for viscosity even at extremes in temperature and density.
Journal of Chemical and Engineering Data


entropy scaling, viscosity, propane


Bell, I. (2020), Entropy Scaling of Viscosity – I: A Case Study of Propane, Journal of Chemical and Engineering Data, [online], (Accessed December 5, 2023)
Created May 11, 2020, Updated July 8, 2020