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Non-Newtonian fluid print that page


A non Newtonian fluid is a fluid whose flow properties differ in any way from those of Newtonian fluids . Most commonly the viscosity of non Newtonian fluids is not independent of shear rate or shear rate history. However, there are some non Newtonian fluids with shear-independent

Newtonian fluid print that page

A Newtonian fluid (named after Isaac Newton ) is a fluid whose stress versus strain rate curve is linear and passes through the origin . [ 1 ] [ 2 ] [ 3 ] The constant of proportionality is known as the viscosity . [ edit ] Definition A simple equation to describe Newtonian fluid | 2011/3/29 7:48:20

Geophysical fluid dynamics print that page


former leads to the Navier-Stokes equations . Further approximations are generally made. First, the fluid is assumed to be incompressible . Remarkably, this works well even for a highly compressible fluid like air as long as sound and shock waves can be ignored. Second, the fluid is assumed

Dark fluid print that page

In astronomy and cosmology , dark fluid is an alternative theory to both dark matter and dark energy and attempts to explain both phenomena in a single framework. [ 1 ] Dark fluid proposes that dark matter and dark energy are not separate physical phenomena as previously thought, nor | 2011/8/31 10:51:46

Carreau fluid print that page


Where: μ 0 , λ and n are material coefficients. At low shear rate ( ) Carreau fluid behaves as a Newtonian fluid and at high shear rate ( ) as a power-law fluid . The model was first proposed by Pierre Carreau . [ edit ] See also Navier-Stokes equations Fluid Cross fluid

Fluid mechanics print that page


The study of fluid mechanics goes back at least to the days of ancient Greece , when Archimedes investigated fluid statics and buoyancy and formulated his famous law known now as the Archimedes' Principle . Rapid advancement in fluid mechanics began with Leonardo da Vinci (observation

Generalized Newtonian fluid print that page

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 | 2011/6/8 16:46:34

Fluid dynamics print that page

In physics , fluid dynamics is a sub-discipline of fluid mechanics that deals with fluid flow —the natural science of fluids ( liquids and gases ) in motion. It has several subdisciplines itself, including aerodynamics (the study of air and other gases in motion) and hydrodynamics | 2011/10/1 3:59:26

Force print that page


mechanical stress can remain embedded in a solid object, gradually deforming it, mechanical stress in a fluid determines changes in its pressure and volume . [ 3 ] [ 4 ] Philosophers in antiquity used the concept of force in the study of stationary and moving objects and simple machines

Herschel–Bulkley fluid print that page

The Herschel–Bulkley fluid is a generalized model of a non Newtonian fluid , in which the strain experienced by the fluid is related to the stress in a complicated, non-linear way. Three parameters characterize this relationship: the consistency k , the flow index n , and the yield | 2011/3/7 22:56:31