In multiphase flow the Darcy friction factor can be calculated as Darcy friction factor Single-phase @model with specific approximation of Reynolds number:
{\rm Re} = \frac{\rho_L \, v_L^2 \, d_L^2 + \rho_g \, v_g^2 \, d_g^2}{\mu_L \, v_L \, d_L + \mu_g \, v_g \, d_g} |
where
\rho_L | liquid density | \rho_g | gas density |
v_L | liquid velocity | v_g | gas velocity |
See also
Physics / Fluid Dynamics / Pipe Flow Dynamics / Darcy–Weisbach equation / Darcy friction factor
Reference
L. E. Ortiz-Vidala, N. Mureithib, and O. M. H. Rodrigueza ,TWO-PHASE FRICTION FACTOR IN GAS-LIQUID PIPE FLOW, Engenharia Térmica (Thermal Engineering), Vol. 13, No. 2, December 2014, p. 81-88