Page 289 - Formulas and Calculations for Petroleum Engineering

282 Formulas and calculations for petroleum engineering

5.56 Fanning’s friction factor (turbulent flow)

Input(s)
D: Diameter (ft)
v: Velocity of Fluid (ft/s)
r: Density of Fluid (g/cc)
m: Visocosity of Fluid (cP)

Output(s)

f: Friction Factor (dimensionless)

Formula(s)

0:25
0:0791 m
f ¼
0:25
ð D v rÞ
Reference: Bird, R.B., Stewart, W.E. and Lightfoot, E.N. (2002). Transport Phenomena (Second Ed.). John Wiley & Sons,
Chapter: 6, Page: 181.

5.57 Fick’s law of binary diffusion

Input(s)
r: Density (g/cc)
2
D AB : Diffusivity (cm /s)
dw a : Mass Fraction of A (fraction)
dy: Difference in Distance (cm)

Output(s)

2
j Ay : Mass Flux (g/cm s)
Formula(s)

dw a
j ¼ D rð Þ
Ay AB
dy

Reference: Bird, R.B., Stewart, W.E. and Lightfoot, E.N. (2002). Transport Phenomena (Second Ed.). John Wiley & Sons,
Chapter: 17, Page: 515.

5.58 Film condensation on vertical pipes
Input(s)

k: Thermal Conductivity (W/mK)
r: Density (g/cc)
2
g: Acceleration due to Gravity (m/s )
H vap : Heat of Vaporization (N)
m: Viscosity (cP)
L: Length (m)
Td: Dew Point Temperature (K)
To: Outlet Temperature (K)