caa a22 4500 606197117 CHVBK 20210128100927.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00348-014-1881-7 doi (NATIONALLICENCE)springer-10.1007/s00348-014-1881-7 Motion of an isolated liquid plug inside a capillary tube: effect of contact angle hysteresis [Elektronische Daten] [Vyas Srinivasan, Sameer Khandekar, Nathan Bouamrane, Frederic Lefevre, Jocelyn Bonjour] Dynamics of a single, small and isolated partially wetting liquid plug (of known length L and wettability), placed at rest inside a long, dry, circular capillary tube (D=1.5mm), and subsequently quasi-statically pushed from one end by applying air pressure, the other end being kept exposed to atmosphere, are reported. The air pressure first overcomes the ‘static' friction manifested by the three-phase contact line at the advancing and receding menisci, and then, the plug motion gets initiated, eventually leading to a terminal velocity (Ca~2.8×10−5), when pressure force balances net frictional resistance due to viscous and surface forces. It is seen that, under steady motion, the curvature profiles of the advancing and receding menisci of liquid plug, respectively, remain the same, independent of the plug length. Steady-state pressure drop is dominated by the contribution due to contact angle hysteresis, which is also independent of the plug length. Increasing the system wettability drastically decreased the contact angle hysteresis and the associated net pressure drop. Springer-Verlag Berlin Heidelberg, 2015 Srinivasan Vyas Indian Institute of Technology Kanpur, 208016, Kanpur, India aut Khandekar Sameer Indian Institute of Technology Kanpur, 208016, Kanpur, India aut Bouamrane Nathan CNRS, Université de Lyon, Lyon, France aut Lefevre Frederic CNRS, Université de Lyon, Lyon, France aut Bonjour Jocelyn CNRS, Université de Lyon, Lyon, France aut Experiments in Fluids Springer Berlin Heidelberg 56/1(2015-01-01), 1-6 0723-4864 56:1<1 2015 56 348 https://doi.org/10.1007/s00348-014-1881-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 review-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00348-014-1881-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Srinivasan Vyas Indian Institute of Technology Kanpur, 208016, Kanpur, India aut NATIONALLICENCE 700 1- Khandekar Sameer Indian Institute of Technology Kanpur, 208016, Kanpur, India aut NATIONALLICENCE 700 1- Bouamrane Nathan CNRS, Université de Lyon, Lyon, France aut NATIONALLICENCE 700 1- Lefevre Frederic CNRS, Université de Lyon, Lyon, France aut NATIONALLICENCE 700 1- Bonjour Jocelyn CNRS, Université de Lyon, Lyon, France aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/1(2015-01-01), 1-6 0723-4864 56:1<1 2015 56 348