.... modeling & simulation pig launch upstream oil & gas bypass operation liquid slug pipeline pigging pipeline transient behavior simulator bypass pig bypass pig modeling slug catcher friction force pipeline liquid content bhr group 2014 simulation result field data liquid content...

... of solid concentration were compared with data in the literature. For the intermittent flows, the bubble / liquid slug transitions were detected using the ultrasonic data. It was then possible to calculate parameters related to the flow structure. Keywords: ultrasonic technique; high-speed filming...