Duns & Ros LAMBDAs
Duns & Ros (1963) flow-regime correlation for vertical two-phase flow.
3 lambdas
PO.VFP.DunsRos.dPdL.SI(Ql, Qg, P, Rho_l, Ul, Bl, Rho_g, Ug, Bg, IFT_gl, Rs, pipe_ID, pipe_roughness)
Calculates pressure gradient using Duns and Ros (1963) correlation, [kPa/m]. For vertical gas wells with liquid, high GOR wells (SI units).
PO.VFP.DunsRos.Pout.SI(Ql, Qg, P_in, T, Rho_l, Ul, SG_gas, IFT_gl, pipe_ID, pipe_length, pipe_roughness)
Calculates outlet pipe pressure using Duns and Ros (1963), [kPa]. Vertical gas wells. Gas properties (ρg, μg, Bg) use DAK (Z-factor) and LGE (viscosity) (SI units).
PO.VFP.DunsRos.Pin.SI(Ql, Qg, P_out, T, Rho_l, Ul, SG_gas, IFT_gl, pipe_ID, pipe_length, pipe_roughness)
Calculates inlet pipe pressure using Duns and Ros (1963), [kPa]. Vertical gas wells. Gas properties (ρg, μg, Bg) use DAK (Z-factor) and LGE (viscosity) (SI units).