Friction factor in flow through conduits

Input(s)

D: Diameter of Conduit ( $\mathrm{ft}$ )

L: Length of Conduit (ft)

v: Fluid Velocity (ft/s)

$\boldsymbol{P}_{\boldsymbol{o}}$: Inlet Pressure (psi)

$\boldsymbol{P}_{\boldsymbol{L}}$: Outlet Pressure (psi)

$\rho$: Density $(\mathrm{g} / \mathrm{cc})$

Output(s)

f: Friction Factor (dimensionless)

Formula(s)

$$ \mathrm{f}=\frac{0.25 * \mathrm{D} *\left(\mathrm{P}_{\mathrm{o}}-\mathrm{P}_{\mathrm{L}}\right)}{0.5 * \mathrm{~L} * \rho *\left(\mathrm{v}^{2}\right)} $$

Reference(s)

Bird, R.B., Stewart, W.E. and Lightfoot, E.N. (2002). Transport Phenomena (Second Ed.). John Wiley \& Sons, Chapter: 6, Page: 178 .