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The Venturi effect is the reduction in fluid pressure that results when a moving fluid speeds up as it flows from one section of a pipe to a smaller section. The Venturi effect is named after its discoverer, the Italian physicist Giovanni Battista Venturi , and first published in 1797.
For a horizontal device, the continuity equation shows that for an incompressible fluid, the reduction in diameter will cause an increase in the fluid flow speed. Subsequently, Bernoulli's principle then shows that there must be a decrease in the pressure in the reduced diameter region. This phenomenon is known as the Venturi effect.
A vacuum ejector, or simply ejector, or aspirator, is a type of vacuum pump, which produces vacuum by means of the Venturi effect. In an ejector, a working fluid (liquid or gaseous) flows through a jet nozzle into a tube that first narrows and then expands in cross-sectional area.
Carburetors can be quite complex but the three primary methods of adding fuel to the intake air in the main metering circuit is through the pressure difference using the Venturi effect from two separate static pressure orifices in the air flow or between the ambient air pressure fed into the fuel bowl and the pressure from Bernoulli's principle ...
Veblen effect (consumer theory) (goods) Venturi effect (fluid dynamics) Venus effect (artistic techniques) (cognitive science) (film techniques) (mirrors) (psychology) Visual effects (computer generated imagery) Visual effects art director; Voigt effect (magnetism) (optics) Von Restorff effect (cognitive biases) (psychological theories)
[dubious – discuss] This enhances the Bernoulli effect and increases downforce. It is an example of Couette flow . While such downforce-producing aerodynamic techniques are often referred to with the catch-all term "ground effect", they are not strictly speaking a result of the same aerodynamic phenomenon as the ground effect which is ...
At the same time, the venturi effect causes the static pressure, and therefore the density, to decrease at the constriction. Choked flow is a limiting condition where the mass flow cannot increase with a further decrease in the downstream pressure environment for a fixed upstream pressure and temperature.
The ejector venturi is unique among available scrubbing systems since it can move the process gas without the aid of a fan or blower. The liquid spray coming from the nozzle creates a partial vacuum in the side duct of the scrubber. The partial vacuum is due to the Bernoulli effect, and is similar to water aspirators used in chemistry labs ...