Movement of liquid rivulet in a microchannel with a co-current gas flow

Yu. O. Kabova, V. V. Kuznetsov, O. A. Kabov

Research output: Contribution to journalArticlepeer-review


The joint steady-state motion of a rivulet of incompressible liquid and a gas flow in a microchannel was studied taking into account the action of gravity forces, tangential stress at the gas-liquid interface, and Van der Waals forces. The values of contact angle are calculated for various values of liquid and gas flow rates. It is shown that for a constant liquid flow rate, an increase in gas velocity leads to a decrease in the height of rivulet, and the surface of rivulet becomes flatter. A significant deforming effect of rivulet on the velocity distribution in gas is found.

Original languageEnglish
Pages (from-to)865-874
Number of pages10
JournalThermophysics and Aeromechanics
Issue number6
Publication statusPublished - 1 Nov 2018


  • two-phase flows
  • rivulets
  • microchannels
  • numerical studies
  • FILM


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