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Generalized Newtonian fluid : ウィキペディア英語版 | Generalized Newtonian fluid A generalized Newtonian fluid is an idealized fluid for which the shear stress is a function of shear rate at the particular time, but not dependent upon the history of deformation. Despite this type of fluid is non-Newtonian (i.e. non-linear) in nature, its constitutive equation is a generalised form of the Newtonian fluid. Generalised Newtonian fluids satisfy the following rheological equation: : where is the shear stress, and the shear rate. The quantity represents an ''apparent'' or ''effective viscosity'' as a function of the shear rate. The most commonly used types of generalized Newtonian fluids are: *Power-law fluid *Cross fluid *Carreau fluid *Second-order fluid ==See also==
*Navier–Stokes equations
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