Bernoulli’s Equation

As a fluid moves through a region where its speed and/or elevation above the Earth’s surface changes, the pressure in the fluid varies with these changes

$\frac{1}{2}\rho v_1^2+\rho g{h}_1+P_1=\frac{1}{2}\rho v_2^2+\rho g{h}_2+P_2$

where

• $P$ is the pressure area (1st group)
• Kinetic energy per unit volume (2nd group)
• Potential energy per unit volume (3rd group)