caa a22 4500 445850922 CHVBK 20180317145413.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1134/S0040579511020011 doi (NATIONALLICENCE)springer-10.1134/S0040579511020011 Abiev R. St. Petersburg State Institute of Technology, Moskovskii pr. 26, 190013, St. Petersburg, Russia aut Modeling of pressure losses for the slug flow of a gas-liquid mixture in mini- and microchannels [Elektronische Daten] [R. Abiev] In addition to the previously constructed model of the hydrodynamics of a gas-liquid slug flow, a mathematical model is developed that describes pressure losses taking into account the rearrangement of a velocity profile in liquid slugs and energy losses on the formation and renewal of interfacial area during the motion of bubbles. The contribution of different forms of pressure losses in capillaries is analyzed. It is shown that in microchannels tangential stresses on the surface of a bubble substantially affect the total pressure losses. It is found that the length of bubbles does not affect the rate of surface formation and respective pressure losses if bubbles have the same velocity. The results of modeling are in satisfactory agreement with experimental data of other researchers. Pleiades Publishing, Ltd., 2011 Theoretical Foundations of Chemical Engineering SP MAIK Nauka/Interperiodica 45/2(2011-04-01), 156-163 0040-5795 45:2<156 2011 45 11236 https://doi.org/10.1134/S0040579511020011 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0040579511020011 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Abiev R. St. Petersburg State Institute of Technology, Moskovskii pr. 26, 190013, St. Petersburg, Russia aut NATIONALLICENCE 773 0- Theoretical Foundations of Chemical Engineering SP MAIK Nauka/Interperiodica 45/2(2011-04-01), 156-163 0040-5795 45:2<156 2011 45 11236 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer