Physics you can see, not just read about.

For steady, incompressible, and inviscid flow along a streamline, the energy per unit volume remains constant:

$P + \frac{1}{2}\rho v^2 + \rho g h = \text{constant}$

Breakdown of terms

• $P$: Static pressure of the fluid (units: Pa or $N/m^2$)
• $\frac{1}{2}\rho v^2$: Dynamic pressure (kinetic energy component)
• $\rho g h$: Hydrostatic pressure (potential energy component)

Variables defined

• $\rho$ (rho): Fluid density ($kg/m^3$)
• $v$: Fluid velocity ($m/s$)
• $g$: Acceleration due to gravity (approx $9.81\ m/s^2$)
• $h$: Height above a reference level (m)