Pressure Coefficient

Written by Jerry Ratzlaff. Posted in Dimensionless Numbers

Pressure coefficient is a dimensionless number about the relative pressures throughout a flow field in fluid mechanics.

FORMULA

$$C_p = \frac { p \;-\; p_{\infty} } { \frac {1}{2} \rho_{\infty} v_{\infty}^2 } \;$$

Where:

$$C_p$$ = pressure coefficient

$$p$$ = pressure

$$p_{\infty}$$ = free stream pressure

$$\rho _{\infty}$$ = free stream density

$$v_{\infty}$$ = free stream velocity