Prediction of the viscosity of supercritical fluid mixtures

摘要: A method for predicting the viscosity of supercritical, multicomponent fluid mixtures, at any density, from zero-density pure components is presented. The based upon results a rigid-sphere model, suitably interpreted to apply real fluids, and on finding that excess supercritical fluids can be adequately described by density function independent temperature. range extends twice critical component with smallest density. only exception methane-rich mixtures where mixture should not exceed 12000 mol·m−3. uncertainty ascribed predictions made this order ±5%.