This article is cited in 7 papers

Instabilities of two-phase flows in short rectangular microchannels

E. A. Chinnov^ab, O. A. Kabov<sup>ab

a</sup> Microgravity Research Center, Université Libre de Bruxelles, B-1050, Brussels, Belgium
^b S.S. Kutateladze Institute of Thermophysics, Siberian Division of the Russian Academy of Sciences

Abstract: Two-phase (liquid-gas) flows in a short horizontal slit channel of rectangular cross section with heights (thicknesses) from 100 to 500 $\mu$m have been experimentally studied using the laser-induced fluorescence and schlieren photography methods. It is established that the formation of various two-phase flow regimes and the transitions between different regimes are determined by instabilities of the liquid-gas flow in the side parts of a channel. In a 100-$\mu$m-thick channel, a frontal instability has been observed during the liquid-gas interaction in the region of liquid output from the nozzle.

Received: 16.03.2011

 English version: Technical Physics Letters, 2011, 37:10, 921–924

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