What happens to pressure when fluid speed increases according to Bernoulli's principle?

According to Bernoulli's principle, an increase in the speed of a fluid results in a decrease in pressure. This relationship is explained by the principle that describes the conservation of energy in a flowing fluid. As the fluid's velocity increases, it possesses more kinetic energy, which must be balanced by a reduction in potential energy, reflected as pressure in the fluid.

In practical terms, think of how air behaves around an airplane wing. As air travels faster over the top of the wing, the pressure above the wing decreases compared to the higher pressure beneath it, creating lift. This principle is fundamental in various applications across aerodynamics and fluid mechanics, demonstrating how changes in fluid speed directly impact pressure.

Understanding this relationship is crucial for pilots, engineers, and anyone involved in aviation or fluid dynamics, as it informs design principles and operational protocols.