  We experimentally and computationally study the flow of a
quasi-two-dimensional emulsion through a constricting hopper shape. Our area
fractions are above jamming such that the droplets are always in contact with
one another and are in many cases highly deformed. At the lowest flow rates,
the droplets exit the hopper via intermittent avalanches. At the highest flow
rates, the droplets exit continuously. The transition between these two types
of behaviors is a fairly smooth function of the mean strain rate. The
avalanches are characterized by a power law distribution of the time interval
between droplets exiting the hopper, with long intervals between the
avalanches. Our computational studies reproduce the experimental observations
by adding a flexible compliance to the system. The compliance results in
continuous flow at high flow rates, and allows the system to clog at low flow
rates leading to avalanches. The computational results suggest that the
interplay of the flow rate and compliance controls the presence or absence of
the avalanches.
