Understanding Venturi Pump: Calculating Fluid Flow and Suction Speed

[Idea04]

Homework Statement

on a venturi pump the fluid, air or water move through a narrow tube and increases speed and also decreases pressure. Now I have read before that the dynamic pressure and the static pressure are added to get the total pressure. How fast does the fluid have to flow to create suction?

Homework Equations

The Attempt at a Solution

 

[Astronuc]

The suction depends on the fluid velocity and relative sizes of the jet and nozzle.

See this demo -

http://www.ce.utexas.edu/prof/kinnas/319LAB/Applets/Venturi/venturi.html