Related Experiment Video
Updated: Jun 27, 2026

Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames
Published on: June 1, 2016
An improved theoretical model for thermal diffusion coefficient in liquid hydrocarbon mixtures: Comparison between
Yu Yan1, Pablo Blanco, M Ziad Saghir
1School of Engineering, University of British Columbia, Kelowna, British Columbia BC V1V 1V7, Canada.
Abstract:
Thermal diffusion or Soret effect is a phenomenon of mass transport in fluid mixtures driven by temperature gradients. In this paper, we have studied thermal diffusion coefficients for different binary n-alkane mixtures (equal mass fraction) through both theoretical and experimental methods. The theoretical model is based on the irreversible thermodynamics. Particularly, the nonequilibrium thermodynamic property tau is examined and remodeled with a consideration of vapor-liquid equilibrium in binary mixtures. The experimental method is based on the thermogravitational technique. The new model provides a good agreement with the experimental data from this study and in the literature.
Related Concept Videos
Intermolecular Forces and Physical Properties
Thermodynamics: Activity Coefficient
The activity coefficient is a measure of the deviation from ideal behavior. When the ionic strength of the solution is minimal, the activity coefficient of an ionic species is close to unity, making...
Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...
Typical Model Studies
Distillation: Vapor–Liquid Equilibria
Distribution of Molecular Speeds

