ABSTRACT

This theory has been extended to the case of a shear-thinning liquid. A shear­ thinning liquid is characterized by a shear stress dependence on the shear rate as

(7)

following the Ostwald law, where τ(ζ) is the shear stress and a and n are con­ stants. The power factor n is less than 1 (for a Newtonian liquid, η = 1 and a is the viscosity (a ξ η)).