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In hydrology, a Venturi flume is a device used for measuring the rate of flow of a liquid in situations with large flow rates, such as a river. [1] It is based on the Venturi effect, for which it is named. [2] It was first developed by V.M. Cone in Fort Collins, Colorado. [3] The Venturi flume consists of a flume with a constricted section in ...
Video of a Venturi meter used in a lab experiment Idealized flow in a Venturi tube. 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 18th-century Italian physicist Giovanni Battista ...
Choked flow is a fluid dynamic condition associated with the Venturi effect. When a flowing fluid at a given pressure and temperature passes through a constriction (such as the throat of a convergent-divergent nozzle or a valve in a pipe ) into a lower pressure environment the fluid velocity increases.
The low pressure in the venturi can be explained by Bernoulli's principle. In the narrow throat the air is moving at its fastest speed and therefore it is at its lowest pressure. The carburetor may or may not use the Venturi effect between two differently-sized sections of the flow. An injector on a steam locomotive or a static boiler.
Flow through a large penstock such as used at a hydroelectric power plant can be measured by averaging the flow velocity over the entire area. Propeller-type current meters (similar to the purely mechanical Ekman current meter , but now with electronic data acquisition) can be traversed over the area of the penstock and velocities averaged to ...
An Argentinian waiter prosecutors are looking to charge in connection with One Direction star Liam Payne's death admitted to using cocaine with the singer — but insists he was not the drug dealer.
For internal flows, flow separation produces an increase in the flow losses, and stall-type phenomena such as compressor surge, both undesirable phenomena. [8] Another effect of boundary layer separation is regular shedding vortices, known as a Kármán vortex street. Vortices shed from the bluff downstream surface of a structure at a frequency ...
In the early morning hours of Dec. 26, 1996, Patsy Ramsey called 911 to report her 6-year-old daughter JonBenét missing, and found a rambling ransom note left inside their Boulder, Colorado, home.