Regimes and Pressure Drop - The University of Oklahoma

Two Phase Flow

Regimes and Pressure Drop

ChE 4253 - Design I

Regimes in Horizontal Pipes

ChE 4253 - Design I

Regimes in Vertical Pipes

ChE 4253 - Design I

Baker Plot 

λ = ρG ρL

1.2 1000

Ψ= 0.073 ⎡ ηL ⎛ 1000 ⎞2 ⎤1/3
⎢1000 ⎜ ⎟⎥
σ ⎢⎣ ⎝ ρL ⎠ ⎦⎥

[ρ] = kg / m3

[σ ] = N / m

[η] = kg / (m s)

[G] = kg / (m2 s)

ChE 4253 - Design I

Pressure Drop

Old Formulas (Lockhardt & Martinelly, Dukler, etc
New:  Beggs‐Brill‐Moody. 

(see Pro II Reference Manual for details)

ChE 4253 - Design I