Viscosity of Ethane at Low and Moderate Densities Using Corresponding States Correlations

At the first step of this research, we focused on the calculation of Chapman-Enskog (CE) viscosity collision integrals using different correlations in comparison with the available experimental data. The average absolute deviation (AAD) between our calculated and literature viscosity data for the dilute ethane was obtained within 1.5% in 90-600 K temperature range. We also assessed the pair interaction potential parameters to reproduce the accurate dilute viscosity values based on the corresponding state collision integrals. In the next step, Rainwater-Friend (RF) theory was applied to calculate the second virial viscosity coefficients at moderate densities up to 1.1mol.lit-1. It should be mentioned that the accuracy of our calculated RF viscosities was obtained 2.1% using CE dilute viscosity values in conjunction with the corresponding states of the second virial viscosity coefficients.