Applications of Bernoulli’s Theorem:
1) Venturi meter: It is a device that is based on Bernoulli’s theorem. This device is used to measure the rate of flow (or say flow speed) of the incompressible fluid flowing through a pipe.
2) Working of an aeroplane: The wings of an airplane (aerofoil) are so designed that its upper surface is more curved than the lower surface and the front edge is broader than the real edge. As the aircraft moves, the air moves faster above the aerofoil than at the bottom. The difference in airspeed is calculated using Bernoulli’s principle to create a pressure difference.
3) Bunsen burner: In this, the gas comes out of the nozzle with high velocity, hence the pressure in the stem decreases. So outside air reaches into the burner through an air vent and the mixture of air and gas gives a blue flame. Since, the gas enters with a large velocity and so the pressure inside the tube is lowered than the outer atmospheric pressure.
4) Other applications: This Bernoulli’s concept is mainly used in the design of carburetor of automobiles, filter pumps, atomizers, and sprayers.