# Dynamic Pressure

Written by Jerry Ratzlaff on . Posted in Dynamics

Dynamic pressure, abbreviated as q or Q, also known as velocity pressure, is the amount of total pressure resulting from the media velocity.

## Dynamic Pressure formulas

 $$\large{ q = \frac {1} {2}\; \rho\; v^2 }$$ $$\large{ q = \frac {\rho\; v^2} {2} }$$

### Where:

 Units English Mertic $$\large{ q }$$ = dynamic pressure $$\large{\frac{lbf}{in^2}}$$ $$\large{ Pa }$$ $$\large{ \rho }$$   (Greek symbol rho) = density of fluid $$\large{\frac{lbm}{ft^3}}$$ $$\large{\frac{kg}{m^3}}$$ $$\large{ v }$$ = velocity of fluid $$\large{\frac{ft}{sec}}$$ $$\large{\frac{m}{s}}$$

Tags: Pressure Equations