Form of multicomponent Fickian diffusion coefficients matrix |
| |
Authors: | J. Wambui Mutoru Abbas Firoozabadi |
| |
Affiliation: | Department of Chemical and Environmental Engineering, School of Engineering and Applied Science, Yale University, New Haven, CT, USA |
| |
Abstract: | The form of multicomponent Fickian diffusion coefficients matrix in thermodynamically stable mixtures is established based on the form of phenomenological coefficients and thermodynamic factors. While phenomenological coefficients form a symmetric positive definite matrix, the determinant of thermodynamic factors matrix is positive. As a result, the Fickian diffusion coefficients matrix has a positive determinant, but its elements — including diagonal elements — can be negative. Comprehensive survey of reported diffusion coefficients data for ternary and quaternary mixtures, confirms that invariably the determinant of the Fickian diffusion coefficients matrix is positive. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|