Alternative Newtonian friction loss correlation typically applied to high viscosity hydrocarbon and heated transport systems.
It uses an empirical relationship to determine a modified Reynolds number for calculating friction factors in laminar and turbulent flow regimes.
R_m = Re / 7742Laminar flow friction factor:
f = 0.00207 / R_mTurbulent flow friction factor:
f = 0.0018 + 0.00662 R_m^{-0.355}Friction loss relationship:
P_m = C (f S Q^2)/D^5Where:
P_m |
Pressure Drop, Psi / mi (US) / kPa / m (SI) |
| C | Unit constant, 0.241 (US) / 6.2191 x $10^{10}$ (SI) |
| f | Shell MIT friction factor |
| Q | Flowrate, bbl/day (US) / m3/h (SI) |
| D | Pipe diameter, In (US) / mm (SI) |
