Venturi effect

The Venturi effect is a special case of the Bernoulli effect, in the case of fluid or air flow through a tube or pipe with a constriction in in it. The fluid must speed up in the restriction, reducing its pressure and producing a partial vacuum via the Bernoulli Effect.

The Venturi effect is visible in the capillaries of the human circulatory system or in large cities where wind is forced between buildings. It used in gas jets that mix air and flammable gas in barbecues or gas stoves; in water aspirators that produce partial vacuum from a water spigot; in atomizers that disperse perfume; and in carburetors that use the effect to suck gasoline into an engine's intake air stream. A simple way to demonstrate the Venturi effect is to squeeze a flexible hose that is carrying water. If the flow is strong enough, the constriction will remain even if the hose would normally spring back to its normal shape: the partial vacuum produced in the constriction is sufficient to keep the hose collapsed.

See also

es:Efecto VenturiTemplate:Physics-stub

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