heats of transport, diffusion, thermoeffect measurements
Recently reported thermal diffusion factors obtained from heats of transport have been used to test the ability of existing theories to predict thermal diffusivities using model parameters regressed from pure component transport data. None of the theories tested were able to provide even qualitative agreement with experiment. However, predictions using a square-well Enskog theory, modified here for consistency with normal experimental definitions, were found to be approximately correct using pure-component square-well parameters regressed from viscosity and thermal conductivity and an assumed mixing rule for cross terms. Predicted values are very sensitive to the energy mixing rule, and correlation of experimental data is possible for some systems using this theory with one adjustable parameter in the mixing rule.
Original Publication Citation
Yi, S. C. and R. L. Rowley. "On the use of a modified square-well model for prediction and correlation of thermal diffusion factors in binary liquid mixtures." The Journal of Chemical Physics 87 (1987): 7214-722
BYU ScholarsArchive Citation
Rowley, Richard L. and Yi, S. C., "On the use of a modified square-well model for prediction and correlation of thermal diffusion factors in binary liquid mixtures" (1987). All Faculty Publications. 741.
Ira A. Fulton College of Engineering and Technology
© 1987 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in The Journal of Chemical Physics and may be found at http://link.aip.org/link/?JCPSA6/87/7214/1
Copyright Use Information