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界面现象 及传热
ESCI SJR: 0.146

ISSN 打印: 2169-2785
ISSN 在线: 2167-857X

Open Access

界面现象 及传热

DOI: 10.1615/InterfacPhenomHeatTransfer.2016014092
pages 243-257

TWO-PHASE FLOW REGIMES IN SHORT HORIZONTAL RECTANGULAR MICROCHANNELS

Evgeny Anavitolievich Chinnov
Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia; Novosibirsk State University, 630090 Novosibirsk, Russia
Fedor V. Ron'shin
Kutateladze Institute of Thermophysics SB RAS, 630090, Novosibirsk, Russia; Novosibirsk State University, 630090, Novosibirsk, Russia
Oleg A. Kabov
Kutateladze Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences, 1, Acad. Lavrentyev Ave., Novosibirsk, 630090, Russia; Institute of Power Engineering, National Tomsk Polytechnic Research University, 7, Usova Street, Tomsk, 634050, Russia; Novosibirsk State University, 2, Pirogova str., Novosibirsk, 630090, Russia

ABSTRACT

Laser-induced fluorescence and Schlieren techniques have been used for study of gas−liquid flow inside the channels with the heights of 0.1 and 0.2 mm. The two-phase flow regimes and transition between them are studied. The classical regimes of two-phase flow in the channel (bubble, stratified, churn, and annular) were detected. New gas jet-drop regime was identified in the short horizontal rectangular channels. Experimental information allows us to define the characteristics of the churn regime and to determine precisely the boundaries between the regimes of the two-phase flows. It was shown, that with channel height decreasing, the area of the jet-drop flow regime decreases. The area of the churn regime increases. With channel width increasing, the area of the churn regime increases also.