Topic summary
Venturi effect
The Venturi effect is the reduction in fluid pressure that results when a moving fluid speeds up as it is funneled from one section of a pipe to another, smaller section. As the fluid flows into a smaller area, the fluid's velocity increases, while the static pressure decreases. The Venturi effect is an example of Bernoulli's principle.
The Venturi effect is named after its discoverer, the Italian PhysicistGiovanni Battista Venturi, and was first published in 1797.
The effect has various applications in engineering, architecture, and everyday objects such as atomizer nozzles and wine aerators. The reduction in pressure inside the constriction can be used both for measuring the fluid flow and for moving other fluids (e.g. in a vacuum ejector).