Affiliations: School of Computing and Engineering, University of
Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK. E-mail:
[email protected]
Abstract: Upward inclined gas-liquid flows are frequently encountered in the
oil industry and data relating to the local gas volume fraction distribution
and the local gas velocity distribution is important, for example, in pressure
gradient prediction and in modeling oil well 'blowouts'.
In this paper measurements are presented of the local gas volume fraction
distribution and the local axial gas velocity distribution which were taken in
bubbly air-water flows in an 80 mm diameter pipe which was inclined at angles
of 0°, 15° and 30° to the vertical.
Qualitative arguments are presented to explain the influence of the liquid
superficial velocity on the local gas volume fraction distribution in inclined
flow and also to explain the very high axial gas velocities observed towards
the upper side of the inclined pipe.
Keywords: Local volume fraction, Local velocity, Inclined gas-liquid flow