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.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

Named after Giovanni Battista Venturi (1746?1822), Italian physicist.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

Venturis are also used to measure the speed of a fluid, by measuring pressure changes from one point to another along the venturi. Placing a liquid in a U-shaped tube and connecting the ends of the tubes to both ends of 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 a more expensive way to measure fluid flow than an orifice plate which uses the same principle as Venturi but is cheaper and less accurate.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

Fluid: FLUID (Fast Light User Interface Designer) is a graphical editor that is used to produce FLTK source code. FLUID edits and saves its state in text .fl files, which can be edited in a text editor for finer control over display and behavior....

Velocity: :This article is about velocity in physics. For other meanings, see velocity (disambiguation)....

Pressure: Pressure is the amount of force applied normal to a surface divided by the area of that surface. As an example of varying pressures, a finger can be pressed against a wall without making any lasting impression; however, the same finger pushing a thumbtack can easily damage the wall. Although the f...