Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Head velocity is when the liquid is allowed to flow from the tank while additional liquid is being added.  The movement of the liquid through the pipe is converted to kinetic energy that is called head velocity.

$$\large{ \Delta h = \frac{u^2}{2 \; g} }$$

Where:

$$\large{ \Delta h }$$ = head loss of flowing fluid

$$\large{ g }$$ = gravitational acceleration  (32.2 feet per second/per second)

$$\large{ u }$$ = fluid velocity