On the solution of external laminar free convection to power law fluids
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"Pseudoplastic fluids (power law fluid index N [less than] 1), dilatant fluids (N>1), and even Newtonian fluids (N=1) are commonly called power laws fluids, because they show an empirical shear stress (T)-strain rate (relationship known as the power law where N and m are empirical constants characteristic of the fluid; miscalled the fluid consistency index. Equation (1.1) is also called the power model of Ostwald-de Waele-Nutting (1), or simply the Ostwald power model. It applies only to one-dimensional, incompressible flow in which is much larger than all the other elements instrain rate tensor. It should also be noted that all power law fluids have no yield stress and are time independent; in other words, the time dependency of the properties is very small and thus may be neglected in most applications. Typical flow curves for power law fluids are plotted in Fig. 1.1."--Introduction.
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