Date of Award


Publication Type

Doctoral Thesis

Degree Name



Civil and Environmental Engineering


Engineering, Chemical.


Asfour, A. A.




The densities and kinematic viscosities of the quinary regular system: Toluene(1)-n-octane(2)-ethylbenzene(3)-n-teradecane(4)-n-hexadecane(5) as well as all of its corresponding quaternary and ternary subsystems have been measured at 293.15, 298.15, 308.15, and 313.15 K over the entire composition range. In addition, three binary systems were studied. In these systems the undefined hydrocarbon mixture (Jayflex 215) is the common component for each of them. The experimental data obtained in this study and data available from the literature were employed to test the predictive capabilities of the most widely known and accepted viscosity models for liquid mixtures. Moreover, the data were further utilized to enhance the capability some of those models. A new method has been developed in this study for predicting the McAllister model interaction parameters from pure component properties for binary and ternary regular solutions. Furthermore, a general expression for the McAllister three-body model for n-component systems has been derived and reported. The combination of the technique developed in this study for predicting the binary and the ternary interaction parameters with the general expression of the McAllister three-body model for n-component systems resulted in excellent viscosity predictions of regular solutions. A "pseudo-binary" McAllister model has been derived and used to determine the viscometric properties of multi-component systems. In the present study, the modified Generalized Corresponding States Principle (MGCSP) which was reported by Wu (1992) for n-alkane systems has been extended to liquid regular solutions. The obtained results indicated a significant improvement over the original GCSP. Several other viscosity prediction methods namely, the GC-UNIMOD, the ultimate volume, and Allan & Teja correlation have been tested by using the experimental data obtained in this study as well as data available from the literature. Using a common data-base of viscosity data, the predictive capability of the various viscosity models for liquid regular mixtures were subjected to critical testing. Results showed that the generalized McAllister three-body model is superior to other viscosity models.Dept. of Environmental Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1998 .N50. Source: Dissertation Abstracts International, Volume: 61-09, Section: B, page: 4854. Adviser: A. Asfour. Thesis (Ph.D.)--University of Windsor (Canada), 1998.