Abstract
Two-phase (liquid-gas) flows in a short horizontal slit channel of rectangular cross section with heights (thicknesses) from 100 to 500 μm 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-μm-thick channel, a frontal instability has been observed during the liquid-gas interaction in the region of liquid output from the nozzle.
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Original Russian Text © E.A. Chinnov, O.A. Kabov, 2011, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2011, Vol. 37, No. 19, pp. 65–71.
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Chinnov, E.A., Kabov, O.A. Instabilities of two-phase flows in short rectangular microchannels. Tech. Phys. Lett. 37, 921–924 (2011). https://doi.org/10.1134/S1063785011100026
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DOI: https://doi.org/10.1134/S1063785011100026