Normal and oblique drop impact of yield stress fluids with thixotropic effects

Nenhuma Miniatura disponível

Data

2019-10-10

Orientador

Coorientador

Pós-graduação

Curso de graduação

Título da Revista

ISSN da Revista

Título de Volume

Editor

Cambridge Univ Press

Tipo

Artigo

Direito de acesso

Acesso abertoAcesso Aberto

Resumo

Normal and oblique drop impact on a solid surface is numerically analysed for yield stress fluids. A rich diversity of results are generated as a consequence of the exploration of the inertial, elastic, plastic and thixotropic features of the process, as well as the inclination of the solid surface. We show that drops of more thixotropic fluids have a higher tendency to bounce in the normal impact, and to roll or to bounce in the case of an oblique drop impact. Concerning elasticity, we found a critical value for the elastic Ohnesorge number above which no bouncing takes place. Experimental findings such as the fact that the stored energy due to the elasticity of the fluid drop plays a role similar to the stored energy of an interfacial nature in inelastic fluid drops are corroborated in the present study.

Descrição

Idioma

Inglês

Como citar

Journal Of Fluid Mechanics. New York: Cambridge Univ Press, v. 876, p. 642-679, 2019.

Itens relacionados