Article
Article
Non-Newtonian fluid flow
Article By:
Harris, J. Postgraduate School of Studies in Chemical Engineering, University of Bradford, Bradford, United Kingdom.
Wilkinson, W. L. Postgraduate School of Studies in Chemical Engineering, University of Bradford, Bradford, United Kingdom.
Last reviewed:January 2020
DOI:https://doi.org/10.1036/1097-8542.455820
The flow behavior of non-Newtonian fluids. Many important flow problems of practical significance cannot be treated within the framework of classical fluid mechanics, which rests on the application of the Navier-Stokes equations, comprising the continuum equations of motion together with Newton's law of viscosity. Non-Newtonian flow, by definition, is concerned with fluids which do not have a constant viscosity in accordance with Newton's law. Some other rheological equation is required which describes the behavior of the fluid, and this is invariably more complicated. See also: Fluid-flow principles; Navier-Stokes equation; Non-newtonian fluid; Viscosity
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