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Study of
phase inversion in an oil-water-gas flow through a horizontal pipe
S. Rafaļ, D. Bonn, G.
Wegdam
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Benoit Lasne
(Master student) has worked on this project. Shell/FOM project: The physics of
fluids and sound propagation (03SHELL03-2)
The purpose of the project is to
study the inversion from the oil-continuous phase to the water-continuous phase
in a simultaneous flow of oil, water and gas through a horizontal pipe.
Measurements of the distribution of oil, water and gas at phase inversion, and
the velocities within the three phases will be made using MRI.
A mixture of oil and water flowing
in a transparent Couette cell has been considered. We have studied the effect of
the relative amount of oil comparing to water on the dissipation of the system;
this, in order to probe the consequences of phase inversion on the effective
viscosity of the mixture.
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Conductivity (mS) of an oil/water
mixture under shear as a function of the volume fraction of oil. At low volume
fraction, oil droplets are dispersed in water while for high volume fraction of
oil, water droplets are dispersed in oil, this inversion is accompanied by a
decrease of the conductivity of the solution.
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1/3 water, 2/3 oil. Beyond a velocity threshold the 2 phases mix. This
corresponds to an important increase of the dissipated energy of the system
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