Artículo de revista
Condition for the incipient motion of non-cohesive particles due to laminar flows of power-law fluids in closed conduits
Fecha
2020Registro en:
Water 2020, 12, 1295
10.3390/W12051295
Autor
Tamburrino Tavantzis, Aldo
Traslaviña Saldes, Cristóbal
Institución
Resumen
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.