Enter the vertical distance, horizontal distance, and constant head water into the calculator to determine the coefficient of velocity.

Coefficient of Velocity Formula

The following equation is used to calculate the Coefficient of Velocity.

Cv = SQRT (x^2 / (4*y*h) )

  • Where Cv is the coefficient of velocity
  • x is the horizontal distance
  • y is the vertical distance
  • h is the head of water

How to Calculate Coefficient of Velocity?

Example Problem:

The following example outlines the steps and information needed to calculate Coefficient of Velocity.

First, determine the horizontal distance . In this example, the horizontal distance is found to be 3ft.

Next, determine the vertical distance . For this problem, the vertical distance is found to be 2ft.

Next, determine the head of water . In this case, the head of water is measured to be 4ft.

Finally, calculate the Coefficient of Velocity using the formula above:

Cv = SQRT (x^2 / (4*y*h) )

Cv = SQRT (3^2 / (4*2*4) )

Cv = .530