Table 1 Orkiszewski method-based criteria for determining the flow regime.
No | Flow regime | Criteria |
|---|---|---|
I | Bubble flow | \({{q_{{\text{g}}} } \mathord{\left/ {\vphantom {{q_{{\text{g}}} } {q_{{\text{t}}} }}} \right. \kern-0pt} {q_{{\text{t}}} }} < L_{{\text{B}}}\) |
II | Slug flow | \({{q_{{\text{g}}} } \mathord{\left/ {\vphantom {{q_{{\text{g}}} } {q_{{\text{t}}} }}} \right. \kern-0pt} {q_{{\text{t}}} }} > L_{{\text{B}}} , \, \overline{v}_{g} < L_{{\text{S}}}\) |
III | Transition flow | \(L_{{\text{S}}} < \overline{v}_{g} < L_{{\text{M}}}\) |
IV | Annular-Mist flow | \(L_{{\text{M}}} < \overline{v}_{g}\) |
