The formation and evolution of slugs formed in air/water mixture in inclined pipes has been characterized as a function of flow conditions, pipe length and inclination angle. Good agreement was found with model predictions and experimental observations available from literature. Two regimes were identified: hydrodynamic slugging and a regime characterized by the occurrence of liquid backflow. The transition between these regimes was found to be a function of inclination angle. For a number of insert devices, the slug dissipation capabilities have been experimentally evaluated. The pressure fluctuations due to slug flow could be reduced up to 16%, albeit at the cost of added pressure drop to the total system.

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