Difference between revisions of "Griffith correlation"

From wiki.pengtools.com
Jump to: navigation, search
(→‎References)
(→‎References)
Line 36: Line 36:
 
  |journal=Journal of Petroleum Technology
 
  |journal=Journal of Petroleum Technology
 
  |publisher = SPE
 
  |publisher = SPE
 +
|number = SPE-1546-PA
 
  |date=June 1967
 
  |date=June 1967
 
  |volume=19
 
  |volume=19

Revision as of 16:38, 27 March 2017

Brief

The Griffith correlation [1] is an empirical correlation which defines:

  • The boundary between the bubble and slug flow[2]
  • The void fraction of gas in bubble flow - gas hold up Hg[2]

Math & Physics

The bubble flow exist when:

\frac{q_g}{q_g + q_L} < L_B [2]
L_B = 1.071 - 0.2218 \frac{(v_g+v_L)^2}{D}, with the limit L_B \geqslant 0.13 [2]

The gas holdup:

H_g = \frac{1}{2}\ \left ( 1 + \frac{v_g+v_L}{v_s} - \sqrt{ \left ( 1 + \frac{v_g+v_L}{v_s} \right )^2 - 4 \frac{v_g}{v_s}} \right ) [2]

Discussion

Nomenclature

References

  1. ↑ Griffith, P.; Wallis, G. B. (August 1961). "Two-Phase Slug Flow". Journal of Heat Transfer. ASME. 83: 307–320. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 Orkiszewski, J. (June 1967). "Predicting Two-Phase Pressure Drops in Vertical Pipe". Journal of Petroleum Technology. SPE. 19 (06).  More than one of |number= and |issue= specified (help)
Retrieved from "https://wiki.pengtools.com/index.php?title=Griffith_correlation&oldid=1779"