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# Fluid Friction

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 Sub Topics You could see a man dives, fishes and even turtles swims, a plane, helicopter and birds fly in air. Here in all these examples the fluid layer separates the body from the surface. This illustrates the fluid friction very clearly. Lets see the basics behind it.

## What is Fluid Friction?

Pour some fluid in a plate and tilt it. It tends to flow when the weight component along the surface in static condition overcomes the friction of fluid and hence known as Static Fluid Friction. Even the tilt angle of each fluid type varies when it has to overcome the static friction. If the viscosity or the static fluid friction is more, greater will be the tilt angle. The Fluid friction even offers the resistance to shear force.

In all above illustrations, there is a friction that exists when contacting surfaces are separated by a film of fluid. There comes the term fluid friction. Basically, it is the type of friction experienced when a layer of fluid separates two surfaces and the layer of fluid move over each other at different speeds.