Abstract
Abstract The paper contains the results of experimental investigation of the rheological characteristics and atomization process of polymer solutions. The solutions had the polyacrylamide mass fraction in the range from 0.0025 to 0.001. The solutions of polymer have non-Newtonian characteristics. It has been shown that viscosity increases with increasing of polymer concentration in the solutions. Extensional viscosity increases with increasing of extensional rates. The Trouton ratios observed for the polymer solutions increase with increasing shear (extensional) rate and polymer concentration in solution. High molecular polymers added to a solvent involve the changes in the rheological properties of liquid and the disintegration of liquid jets and/or sheets. The effect of extensional viscosity on the droplets formation has been shown. The data obtained in the present study have shown that the decreasing of the extensional viscosity of the solution will reduce the spray's droplets sizes. The results may be used for example to verify numerical models or comparisons with respect to similar atomization processes.
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