Recommendations
Pressure drop in Leopold blocksVelocity gradient in pipes and circular orificesLamellar settling modulesSettling tank: hydraulic superficial loading rateTray floculator compartmentVelocity gradient to Parshall meter

Parshall flume

Input data

Throat width

Water height

Output data

Flow

A

B

C

D

E

F

G

K

N

Description

The Parshall flume is a hydraulic structure widely used to measure water flow in open channels. This calculation method allows the design and evaluation of Parshall flumes under various flow conditions.

 

With the Parshall flume calculation tool, the following operations can be performed:

  • Calculate the flow rate (QQ) based on the water height (yy) and throat width (WW).
  • Determine the water height (yy) for a given flow rate (QQ) and throat width (WW).

Failed to load imageParshall flume

Input and Output Parameters

Parameter
Default Units
Description
Throat width (W)
inches
Width of the narrowest part of the flume
Water height (y)
meters
Water level height in the flume
Flow (Q)
m3/sm^3/s
Water flow through the flume
A, B, C, D, E, F, G, K, N
meters
Specific geometric dimensions of the flume

References

  • AZEVEDO NETTO, J. M. de; FERNANDEZ Y FERNANDEZ, Miguel. Manual de hidráulica, 9.ed. São Paulo: Blucher, 2015.