Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Total head, abbreviated as $$h_t$$, is the sum of the discharge flange and the sum of the suction flange.

 $$\large{ h_t = \left( h_{dg} + h_{dv} \right) - \left( h_{sg} + h_{sv} \right) }$$ $$\large{ h_t = \frac{ 3960 \; WHP }{ Q } }$$ (water horsepower)

### Where:

$$\large{ h_t }$$ = total head or height

$$\large{ h_{dg} }$$ = discharge gauge head

$$\large{ h_{dv} }$$ = discharge head velocity

$$\large{ Q }$$ = flow rate

$$\large{ h_{sg} }$$ = suction gauge head

$$\large{ h_{sv} }$$ = suction head velocity

$$\large{ WHP }$$ = water horsepower