Non-Newtonian Fluids

Authors : Yash Gandhi, Gaurav Khadke, Shruti Gavare, Chaitanya Gawali, Shreyas Gaware Types Of Fluids :- 1) Newtonian Fluids 2) Non-Newtonian Fluids Newtonian Fluids The fluids which follows Newton law of Viscosity over its all range of shear rates are known as Newtonian Fluids. Newtons Law of Viscosity With the change in shear stress or shear rates there is no change in the viscosity of the fluid. The following illustrates the Newton Law of Viscosity.                                                   τ =  µdu/dy where: · τ is the shear stress; · μ is the viscosity, and · du/dy is the shear rate. Fluid is Newtonian, if Viscosity is constant. Figure 1 Examples of Newtonian Fluid : Water, Air, Oil, Alcohol, Organic Solvents, Honey, etc. Non-Newtonian Fluid The Fluids which does not obey the Newton Law of Viscosity is Non-Newtonian Fluid. In non-Newtonian fluids, viscosity can change when under force to either more liquid or more solid. Examples of substances exhibiting non-Newtonian Fl