DEFORMATION OF DROPLETS AND BUBBLES IN RHEOLOGICAL FLUIDS

The authors have proposed diff erent models of deformation of droplets and bubbles in regular and non-Newtonian fl uids depending on Weber, Morton, and Reynolds numbers. Consideration has been given to a geometric interpretation of the issues of deformation with the aim of evaluating the surface and volume of a deformed droplet. The infl uence of asphalt and resin material contained in heavy oils on the degree of deformation of the droplets in them has been evaluated. Models of deformation of droplets and bubbles in regular and non-Newtonian fl uids have been developed. It has been noted that the change in the shape of droplets in heavy oils is slight owing to their high viscosity. A comparison of the proposed models of deformation of droplets with the existing experimental data and with other models has been made.
The authors have proposed diff erent models of deformation of droplets and bubbles in regular and non-Newtonian fl uids depending on Weber, Morton, and Reynolds numbers. Consideration has been given to a geometric interpretation of the issues of deformation with the aim of evaluating the surface and volume of a deformed droplet. The infl uence of asphalt and resin material contained in heavy oils on the degree of deformation of the droplets in them has been evaluated. Models of deformation of droplets and bubbles in regular and non-Newtonian fl uids have been developed. It has been noted that the change in the shape of droplets in heavy oils is slight owing to their high viscosity. A comparison of the proposed models of deformation of droplets with the existing experimental data and with other models has been made.
Author:  G. I. Kelbaliyev, S. R. Rasulov, M. R. Manafov, and F. R. Shykhyevaa
Keywords:  droplets, bubbles, deformation, ellipsoid, heavy oils, rheology, asphalt and resin materials, eff ective viscosity, surface tension
Page:  938 - 946