title: Phenomenological Blasius-type friction equation for turbulent power-law fluid flows.
abstract: We propose a friction formula for turbulent power-law fluid flows, a class of purely viscous non-Newtonian fluids commonly found in applications. Our model is derived through an extension of the friction factor analysis based on Kolmogorov's phenomenology, recently proposed by Gioia and Chakraborty. Tests against classical empirical data show excellent agreement over a significant range of Reynolds number. Limits of the model are also discussed.
authors.affiliation: Mechanical Engineering Program, Federal University of Rio de Janeiro (COPPE/UFRJ), Rio de Janeiro 21941-594, Brazil.
authors.forename: H R
authors.initials: HR
authors.lastname: Anbarlooei
authors.affiliation: Mechanical Engineering Program, Federal University of Rio de Janeiro (COPPE/UFRJ), Rio de Janeiro 21941-594, Brazil.
authors.forename: D O A
authors.initials: DO
authors.lastname: Cruz
authors.affiliation: Department of Applied Mathematics, Institute of Mathematics. Federal University of Rio de Janeiro, Rio de Janeiro 21941-594, Brazil.
authors.forename: F
authors.initials: F
authors.lastname: Ramos
authors.affiliation: Mechanical Engineering Program, Federal University of Rio de Janeiro (COPPE/UFRJ), Rio de Janeiro 21941-594, Brazil.
authors.forename: A P
authors.initials: AP
authors.lastname: Silva Freire