Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7060412 | International Journal of Multiphase Flow | 2014 | 10 Pages |
Abstract
From a study of the characteristics of structures across a 67/38 mm sudden contraction, using air/silicone oil flows, it has been found that frequencies of the structures (mainly slugs) persist across the contraction. This is in contrast to the velocities and lengths which increase as they move into the smaller diameter pipe. These observations were found for both vertical and 5° upward orientations. A similar persistence of frequency has been found from four other sources in the literature: a vertical (gradual) contraction; a horizontal Venturi; and two cases of horizontal pipe, 90° bend and vertical riser combination. The latter were at two contrasting conditions: (i) at atmospheric pressure with air/water in small diameter (34 mm) pipes; (ii) at 20 bar in larger diameter pipes (189 mm) using nitrogen and naphtha.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Barry J. Azzopardi, Amadi Ijioma, Shounan Yang, Lokman A. Abdulkareem, Abdelwahid Azzi, Mukhtar Abdulkadir,