Movement of liquid rivulet in a microchannel with a co-current gas flow
Yu.O. Kabova1, V.V. Kuznetsov2,3, O.A. Kabov1,3
1Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
2Lavrentyev Institute of Hydrodynamics SB RAS, Novosibirsk, Russia
3Novosibirsk State University, Novosibirsk, Russia
E-mail: kabov@itp.nsc.ru
Keywords: two-phase flows, rivulets, microchannels, numerical studies
Pages: 865–874
Abstract
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.
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