Drag Coefficient

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

Drag coefficient is a dimensionless number that expresses a force in the direction of flow due to pressure and surface stress on an object.

FORMULA

\(C_D =  \frac {2F_D} {\rho v^2 A} \) 

Where:

\(C_D\) = drag coefficient

\(F_D\) = drag force

\(v\) = velocity

\(\rho\) = mass density

\(A\) = area