Generalized Newtonian fluid
- Generalized Newtonian fluid
A generalized Newtonian fluid is an idealized fluid for which the shear stress, "τ", is a function of shear rate at the particular time, but not dependent upon the history of deformation.
:
where:∂"u"/∂"y" is the shear rate or the velocity gradient perpendicular to the plane of shear (SI unit s−1).
The quantity
:
represents an "apparent" or "effective viscosity" as a function of the shear rate (SI unit Pa⋅s).
The most commonly used types of generalized Newtonian fluids are:
*Power-law fluid
*Cross fluid
*Carreau fluid
*Second order fluid
ee also
*Navier-Stokes equations
*Fluids
*Cross fluid
*Carreau fluid
*Power-law fluid
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