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.