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flow measurement | jsWater.in

# Flumes

Flumes are shaped, open-channel flow sections in which flow is accelerated by converging the sidewalls, raising the bottom, or a combination of both. When only the bottom is raised with no side contractions, the flume is commonly called a broad-crested weir. When the downstream depth is shallow and enough convergence exists between the upstream and read more

# Parshall Flume

A Parshall Flume Video

# Discharge : Venturi Meter

Flow in closed conduits: Venturi Meter Formula The discharge through a venturi meter is as given below; Where, Q = Discharge in cubic meter per second, a1 = Area of pipe section in Sq meters, a2 = Area of throat section in Sq meters, h = head difference between inlet and throat section K = read more

# Discharge : Rectangular Notch

Open Channel Flow: Rectangular Notch The minimum width of Notches shall be at least 150 mm. Rectangular notches are generally used for measuring small flows. Formula The discharge calculation formula from Rectangular notches is as given below; Where, Q = Discharge in cubic meter per second, be = Effective Width in meters, h = Effective read more

# Discharge : V Notch

Open Channel Flow: V Notch The Notches are made from thin metal sheets. Triangular notches are generally used for measuring small flows upto about 1.25 m/s. Formula The discharge calculation formula from triangular notches is as given below; Where, Q = Discharge in cubic meter per second, Theta = Angle of Notch at center, h read more