Premium
The Prediction of Viscosity for Mixtures Using a Modified Square Well Intermolecular Potential Model
Author(s) -
Williams J. D.,
Svrcek W. Y.,
Monnery W. D.
Publication year - 2003
Publication title -
developments in chemical engineering and mineral processing
Language(s) - English
Resource type - Journals
eISSN - 1932-2143
pISSN - 0969-1855
DOI - 10.1002/apj.5500110406
Subject(s) - thermodynamics , viscosity , intermolecular force , polar , work (physics) , binary number , mixing (physics) , square (algebra) , absolute deviation , mass transfer , chemistry , materials science , mathematics , organic chemistry , molecule , physics , statistics , geometry , arithmetic , quantum mechanics , astronomy
In the chemical and process industries, the viscosity of pure components and mixtures is a required fluid property in the areas of hydraulics, heat transfer, and mass transfer. Hence, there is a definite need for a reliable and accurate method for viscosity calculations of mixtures that is applicable over the entire density range for a wide variety of components. The Modified Square Well Intermolecular Potential viscosity model developed by Monnery et al. (1998) to predict pure component viscosities offers a good compromise between theory and applicability. In this work, the square well model is extended to mixtures. A total of 276 binary mixtures, including non‐polar and polar components, were used to regress binary interaction parameters for the mixing rules. The predicted mixture viscosities had a 10% average absolute deviation for the entire density range that included the gas, liquid, and dense phases.