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rectangular-weir

Rectangular Weir Flow Rate Calculator

Online calculator for measuring the water flow rate of rectangle shaped weir. The measurement is based on Bernoullis equation.

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Rectangular Weir Flow Rate Calculation

Head on the Weir (h) = m
Width of the Weir (b) = m
Discharge Constant (Cd) =


Flow Rate = m³/s

 
   
  
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Formula
The Bernoulli's equation is as follows
    q = 2/3 ×Cd ×b ×(2g)1/2 ×h3/2

Where,
    q = Flow Rate
    Cd = Discharge Constant
    b = Width of the Weir
    g = gravity (9.81 m/s²)
    h = Head on the Weir

Free rectangular weir calculator for exact measurement of flow rate. Simple and easy to use.