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Newtonian fluid

Newtonian fluid

Newtonian fluid is a type of fluid, whose shear stress is proportional to velocity gradient.

Newtonian fluid can be expressed with the following equation:

 


where;
τ : Shear stress [Pa]
μ : Viscosity coefficient [Pa・s]
du/d: Velocity gradient [1/s]

Examples of Newtonian fluid include air and water.