Fluid mechanics

Boundary layer

The boundary layer is an ideal zone of fluid flow where the effects of viscosity caused by the proximity of a surface are much more marked than in an external zone. Usually, this area is identified in a fluid layer in the immediate vicinity of a solid surface. As the fluid moves past an object, the molecules right next …

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Fluid mechanics

Fluid mechanics is one of the oldest and broadest fields of engineering. It deals with the properties and behavior of fluids, i.e., liquids and gases at rest (fluid statics) or in motion (fluid dynamics). Because of their ability to flow, liquids and gases have many properties in common not shared by solids. Fluid statics or hydrostatics includes …

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Viscosity

The viscosity (μ, from the Latin viscum) is that property of matter, defined as that physical quantity, which is found mainly in the phenomena of transport of a fluid, that describes a fluid’s resistance to flow, or more specifically, is the measure of the resistance of a fluid to gradual deformation by shear stress (τ) or tensile stress. …

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