Water Flow through an Open Channel - Math for Water Industry

by Enrique
(Barrera)

Flow through an open channel that measures 10 feet long by 2 feet deep by 2 feet wide is 800 gpm. What is the velocity?

Comments for Water Flow through an Open Channel - Math for Water Industry

 Mar 14, 2012 Velocity of Water through an Open Channel by: Staff Question: by Enrique (Barrera) Flow through an open channel that measures 10 feet long by 2 feet deep by 2 feet wide is 800 gpm. What is the velocity? Answer: V = Q/OA V = water velocity in feet per second (how fast the water is flowing) Q = gallons per minute through the open channel = 800 gallons per minute OA = the size (cross section) of the channel in Square Inches = 2 ft * 2 ft * 144 in² per ft² = 576 in² You probably don’t care, but for the record, the numbers in this formula are conversion factors: 0.1337 changes the gallons per minute to cubic feet per minute 144 means 144 square inches per square foot 60 means 60 seconds for every minute Using the equation: V = Q/OA V = gallons per minute x 0.1337 x 144 / {Square inches x 60} V = (800 * 0.1337 * 144)/( 32.37 * 60) V = (15402.2)/( 1942.2) V = 7.9 feet per second, rounded (The velocity of the water flowing through the open channel is 7.9 feet per second. ) Thanks for writing. Staff www.solving-math-problems.com