Bernoulli’s principle is a fundamental concept in fluid dynamics that describes the relationship between the pressure, velocity, and elevation of a fluid in motion. It states that within an inviscid (non-viscous) and incompressible fluid flow, an increase in the fluid’s velocity is accompanied by a decrease in its pressure, and vice versa.
- represents the pressure of the fluid at a specific point.
- represents the reference or stagnation pressure of the fluid at that point, often taken as the pressure at a point where the velocity is zero (e.g., undisturbed freestream conditions).
- represents the density of the fluid.
- represents the velocity of the fluid at that point.