A numerical study of axisymmetric droplet impact of a shear thinning fluid.
Published: 2006
Language: eng
Number of pages: 85
ISBN-13: 9780494212844
Description: An axisymmetric model has been developed to simulate the droplet impact of a shear thinning fluid. The volume of fluid (VOF) method is used for interface tracking, and a constant contact angle is applied at the contact line. A generalized Newtonian constitutive equation is implemented, and the Cross model is used to model shear thinning. Validation results are presented for the flow of a power law fluid in a lid driven cavity, and Newtonian droplet impact.Results are presented for both Newtonian and shear thinning impacts at a variety of Reynolds numbers, Re, with the Weber number,  We, and contact angle, theta, held constant (We = 27 and theta = 90&deg;). To compare the maximum spread, zeta max, a modified Reynolds number, Rem, is defined for shear thinning impacts. Furthermore, a representative strain rate is identified that closely collapses the curves of zeta max vs. Re for Newtonian and shear thinning fluids. This suggests that Newtonian analytical modes can predict zeta max, for shear thinning fluids by using Rem.
Notes: Source: Masters Abstracts International, Volume: 45-03, page: 1645.

Thesis (M.A.Sc.)--University of Toronto, 2006.

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