Abstract
Gas-liquid two-phase flow is commonly observed in petroleum and chemical industries which are transported through pipelines. Due to intermittent characteristics of slug flow, it surges sudden pressure and mechanical impact on the piping system which enhances the fatigue stress and leads to pipeline failure at bends, T- and I-sections. Thus, it is required to identify the formation of intermittent flow pattern which causes economic loss and hazards in industries. In this article, the transition of stratified to onset of intermittent flow pattern is visualized using high speed photography for a different combination of gas (ReSG) and liquid (ReSL) superficial Reynolds number. Based on the observations of the formation of intermittent flow pattern, a transition line is developed for a different combination of superficial liquid (USL) and gas (USG) and compared with other experimental results.
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