Modulation equations for slug flow in vertical pipes

V. Yu Liapidevskii, V. S. Tikhonov

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A gas−liquid flow in a long vertical pipe is considered. A new mathematical model of the flow generalizing the known drift-flux model is constructed. The gas velocity and the average flow velocity in this model are connected by the Zuber−Findlay relation. The model is obtained by averaging the quasi-periodic slug flow regime. Contrary to the drift-flux model, it is possible to restore the internal structure of the flow and, in particular, to give the criterion of transition to the new regime.

Original languageEnglish
Pages (from-to)80-84
Number of pages5
JournalDoklady Physics
Issue number2
Publication statusPublished - 1 Feb 2017

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