Venturi Flowmeter

A practical instrument which makes use of the Bernoulli effect and a manometer pressure gauge is the venturi flowmeter. The illustration shows that you can express the fluid velocity v1 at the inlet of the device in terms of the difference in pressure measured by the manometer. Note that it presumes that the density of the flowing gas is constant, which will not necessarily be true.


Bernoulli concepts
HyperPhysics***** Mechanics ***** Fluids R Nave
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