Page 283 - Formulas and Calculations for Petroleum Engineering

276 Formulas and calculations for petroleum engineering

Output(s)

F D : Drag Force (N)

Formula(s)

1 2

F ¼ r v C A
D d
2
Reference: Wikipedia.org.

5.42 Draining of a cylindrical tank

Input(s)
m: Fluid Viscosity (kg/(ms))
L: Height of the Pipe (m)
H: Height of the Cylindrical Tank (m)
D: Diameter of the Pipe (m)
R: Radius of the Cylindrical Tank (m)
3
r: Fluid Density (kg/m )
2
g: Gravitational Acceleration (m/s )

Output(s)
t efflux : Efflux Time (s)

Formula(s)

128 m L R 2 H
t ¼ ln 1 +
efflux 4
r g D L
Reference: Bird, R.B., Stewart, W.E. and Lightfoot, E.N. (2002). Transport Phenomena (Second Ed.). John Wiley & Sons,
Chapter: 7, Page: 228.

5.43 Draining of a spherical tank

Input(s)
R: Radius of the Sphere (m)
L: Length of the Pipe (m)
2
A: A Constant Related to Length, Radius, and Height (m /s)

Output(s)

t efflux : Efflux Time (s)