Understanding Bernoulli's Principle and Cavitation Bernoulli's principle is a fundamental concept in fluid dynamics, stating that as the velocity of a fluid increases, its pressure decreases, and vice versa. In other words, when fluid flows through a constriction, its speed increases, causing a decrease in pressure perpendicular to the flow direction. Cavitation, on the other hand, occurs when the pressure of a fluid drops below its vapor pressure, forming vapor bubbles. These bubbles collapse w