Example:
A pipe with an internal diameter of 4 inches has water which flows at an average velocity of 14 feet per second. Compute the volumetric flow rate of water in the pipe.
Solution:
By using the equation V = Av, and replace for the area.
V = (π r2) v
V = (3.14) (2/12ft)2(14ft/sec)
V = 1.22 ft3/ sec