High School Physics

Application of Bernoulli’s principle | Bernoulli Theorem application

Last updated on June 24th, 2023 at 04:40 pm

Bernoulli’s principle is named for Daniel Bernoulli, who presented it in 1738, and it concerns the relationship between pressure and flow speed in fluids.

In its simplest form, Bernoulli’s principle states that increasing flow speed in fluids corresponds to decreasing pressure, and vice versa.

Airplane Wings and Sails are two areas where Bernoulli’s Principle is applied.

Let’s find the details below.

Application of Bernoulli’s principle in Airplane Wings

An important example is found in aviation. The airplane wing is a beautiful example of Bernoulli’s principle in action. The wing is tilted upward at a small angle and the upper surface is longer, causing air to flow faster over it. That means a higher flow speed on the top of the wing than on the bottom.
The pressure on top of the wing is therefore reduced, creating a net upward force or lift.

Figure (a) shows the characteristic shape of an airplane wing.

Bernoulli’s principle with applications like airplane wing and boat sails
(a) Airplane wing characteristic shape (b) Sail characteristic shape | Bernoulli’s principle applied

Application of Bernoulli’s principle to design the sails?

Figure (b) shows that the Sails also have the characteristic shape of a wing.
The wind velocity near the front side of the sail > wind velocity at the back end of the sail.
The pressure on the front side of the sail, Pfront, is lower than the pressure on the back of the sail, Pback. This results in a forward force and even allows you to sail into the wind.

Related Post: You are suggested to go through the post on the derivation of Bernoulli’s equation.

See also  Buoyancy
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