Flow through a Venturi 16-3

In another paper I gave you the formula for computing the approximate flow through an orifice or nozzle. Here is the formula for an approximate flow through a venturi tube.

For any venturi tube use:

Or you can use:

Q = flow, in gpm

d1= diameter of venturi throat, inches

d2 = diameter of main pipe, inches

H = difference in head between upstream end and throat.

These formulas will work for any liquid with a viscosity similar to water.


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