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Table 2

Flow pattern classification for vertical pipes used in this work. Adapted from Inoue et al. (2013) [49].

Pattern Representation in the literature
Kouba (1986) Carey (1993) Thomas (2004) Omebere-Iyari and Azzopardi (2007) Falcone et al. (2009) Rosa et al. (2010)
Bubbly Flow (BF) Dispersed bubbles Spherical caps
Dispersed bubble flow Bubbly flow Bubbles Bubble flow Bubble flow Bubbly flow
Intermittent Flow (IT) Elongated bubble flow Slug flow Slug flow Slug flow Slug flow Stable slug
Slug flow Churn flow Churn flow Churn flow Churn flow Unstable slug
Annular Flow (AF) Wavy annular flow Wispy annular flow Annular flow Annular flow Wispy annular flow Semi annular
Annular flow Annular flow Annular flow Annular

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