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For the car manufacturer, see Automobiles Venturi.

A fluid passing through smoothly varying constrictions is subject to changes in velocity and pressure, as described by Bernoulli's principle. A Venturi is a system for speeding the flow of the fluid, by constricting it in a cone-shaped tube. They are found in many applications where the speed of the fluid is important, and form the basis of devices like a carburetor. Automobiles Venturi is a French manufacturer of sports cars. ... A subset of the phases of matter, fluids include liquids, gases, plasmas and, to some extent, plastic solids. ... The velocity of an object is simply its speed in a particular direction. ... Pressure (symbol: p) is the force per unit area acting on a surface in a direction perpendicular to that surface. ... Bernoullis principle states that in fluid flow, an increase in velocity occurs simultaneously with decrease in pressure. ... Stromberg side-draft carburetor The carburetor (American spelling, a. ...

Named after Giovanni Battista Venturi (1746–1822), Italian physicist. Giovanni Battista Venturi. ... // Events Catharine de Ricci (born 1522) canonized. ... 1822 (MDCCCXXII) was a common year starting on Tuesday (see link for calendar) of the Gregorian calendar (or a common year starting on Thursday of the 12-day-slower Julian calendar). ... A Superconductor demonstrating the Meissner Effect. ...

Venturis are alsoprincipio de l venturi de motores marinos

A venturi is all that is needed. When the fluid flows though the venturi the pressure in the two ends of the tube will differ, forcing the liquid to the "low pressure" side. The amount of that move can be calibrated to the speed of the fluid flow.

Venturi are more expensive to construct than a simple orifice plate which uses the same principle as a Venturi, but the orifice plate causes significantly more permanent energy loss and is less accurate. An orifice plate is a device which measures rate of fluid flow. ...

A venturi can also be used to mix a fluid with air. If a pump forces the fluid through a tube connected to a system consisting of a venturi to increase the water speed (the diameter decreases), a short piece of tube with a small hole in it, and last a venturi that decreases speed (so the pipe gets wider again), air will be sucked in through the small hole because of changes in pressure. At the end of the system, a mixture of fluid and air will appear.

To avoid undue drag, a venturi typically has an entry cone of 30 degrees and an exit cone of 5 degrees.

See also

• Venturi effect