Characterization of the Evolution of Intermittent Flow in a Large Diameter Slightly Upward Inclined Pipe

In this study, we acquired experimental data to characterize the evolution of the intermittent flow in a 2° upward inclined, 0.1557 m ID, 85 m length pipe at an average pressure of 1496 kPa. Data comprise pressure and temperature, mass flow rates, differential pressure, and capacitance from nine probe stations. Translational velocity, slug frequency, and slug length evolution are analyzed. Results contribute to evaluating and improving the available slug and pseudo-slug flow models and closure relationships.