Condition for the Incipient Motion of Non-Cohesive Particles Due to Laminar Flows of Power-Law Fluids in Closed Conduits

Tamburrino., A.; Traslaviña, C.

Keywords: laminar flow, incipient motion, non-newtonian fluid, Power-law fluid, closed conduit, Galileo number


The results of an experimental study on the condition of incipient transport of non-cohesive particles due to the flow of a power-law fluid in a rectangular pipe are presented in this article. The pipe can change its inclination, and experiments were carried out with positive and negative slopes. From a dimensional analysis, the parameters that define the condition of incipient motion were found and validated with experimental data. Thus, the threshold condition is well defined by a particle Reynolds number and a Galileo number, properly modified to take into account the power-law rheology of the fluid. The experimental data are also presented in a standard Shields diagram, including the data obtained in other studies carried out in open-channel laminar flows of Newtonian and power-law fluids.

Más información

Título de la Revista: WATER
Volumen: 12
Número: 5
Editorial: MDPI AG
Fecha de publicación: 2020
Página de inicio: 1
Página final: 10
Idioma: English

doi: 10.3390/w12051295

Notas: WOS