naa a22 4500 510818935 CHVBK 20180411083521.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s11814-012-0119-8 doi (NATIONALLICENCE)springer-10.1007/s11814-012-0119-8 The effects of viscosity, surface tension, and flow rate on gasoil-water flow pattern in microchannels [Elektronische Daten] [Rahman Boogar, Reza Gheshlaghi, Mahmood Mahdavi] A microchannel was fabricated with glass tubes to investigate the effect of viscosity, surface tension, and flow rate on the liquid-liquid two-phase flow regime. Water and gasoil were selected as aqueous and organic working fluids, respectively. The two fluids were injected into the microchannel and created either slug or parallel profile depending on the applied conditions. The range of Reynolds and capillary numbers was chosen in such a way that neither inertia nor interfacial tension forces were negligible. Xanthan gum was used to increase viscosity and Triton X-100 (TX-100) and Sodium Dodecyl Sulfate (SDS) were used to reduce the interfacial tension. The results demonstrated that higher value of viscosity and flow rate increased interfacial area, but slug flow regime remained unchanged. The two surfactants showed different effects on the flow regime and interfacial area. Addition of TX-100 did not change the slug flow but decreased the interfacial area. In contrast, addition of SDS increased interfacial area by decreasing the slug's length in the low concentrations and by switching from slug to parallel regime at high concentrations. Korean Institute of Chemical Engineers, Seoul, Korea, 2012 Gasoil-water System nationallicence Microchannel nationallicence Slug Flow nationallicence Parallel Flow nationallicence Interfacial Area nationallicence Flow Regime nationallicence Boogar Rahman Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Azadi Square, Pardis Campus, 9177948944, Mashhad, Iran aut Gheshlaghi Reza Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Azadi Square, Pardis Campus, 9177948944, Mashhad, Iran aut Mahdavi Mahmood Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Azadi Square, Pardis Campus, 9177948944, Mashhad, Iran aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/1(2013-01-01), 45-49 0256-1115 30:1<45 2013 30 11814 https://doi.org/10.1007/s11814-012-0119-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-012-0119-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Boogar Rahman Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Azadi Square, Pardis Campus, 9177948944, Mashhad, Iran aut NATIONALLICENCE 700 1- Gheshlaghi Reza Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Azadi Square, Pardis Campus, 9177948944, Mashhad, Iran aut NATIONALLICENCE 700 1- Mahdavi Mahmood Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Azadi Square, Pardis Campus, 9177948944, Mashhad, Iran aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/1(2013-01-01), 45-49 0256-1115 30:1<45 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer