Form drag

Input(s)

R: Radius (ft)

$\rho$: Density (ppg)

g: Acceleration due to Gravity $\left(\mathrm{ft} / \mathrm{s}^{2}\right)$

$\mu$: Viscosity $(\mathrm{cP})$

$\mathrm{v}$: Velocity $(\mathrm{ft} / \mathrm{s})$

Output(s)

F: Normal Force $(\mathrm{N})$

Formula(s)

$$ \mathrm{F}=\left(\frac{4}{3}\right) * \pi *\left(\mathrm{R}^{3}\right) * \rho * \mathrm{~g}+2 * \pi * \mu * \mathrm{R} * \mathrm{v} $$

Reference(s)

Bird, R.B., Stewart, W.E. and Lightfoot, E.N. (2002). Transport Phenomena (Second Ed.). John Wiley \& Sons, Chapter: 2, Page: 60.