Regimes of two-phase flow in micro- and minichannels (review)

E. A. Chinnov, F. V. Ron’shin, O. A. Kabov

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


The review deals with the analysis of the factors affecting the boundaries of two-phase regimes in the channels of different cross sections, whose minimal size is less than the capillary constant. The channels are classified by size. Data for two-phase flow regimes are systematized and summarized in tables for the round and rectangular tubes. It is indicated that the most studies identify the following two-phase flow regimes: bubble, slug and annular. The regimes found in some papers are described. The terminology used to describe the regimes is kept. Here we analyze the main factors affecting the structure of the two-phase flow, such as gas and liquid flow rates, parameters of the channel and input section, wettability of the inner surface of channels, liquid properties, and gravitational forces. It is shown that development of instability of the two-phase flow has a significant impact on formation, evolution, and change of the flow regimes.

Original languageEnglish
Pages (from-to)265-284
Number of pages20
JournalThermophysics and Aeromechanics
Issue number3
Publication statusPublished - 27 May 2015


  • flat channel
  • microchannel
  • two-phase flow

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Radiation

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