This paper discusses the experimental observation of capillary instabilities of two-phase flow in a microfluidc T-junction. These instabilities are analogous to the classical Plateau-Rayleigh instabilities. The experiments were carried out with mineral oil and water in a rectangular microchannel of 100 μm width and depth of 75 μm. The interfacial tension of the system was around 3 mN/m after addition of a surfactant in the oil phase. We report on the instabilities observed in three fluid inlet configurations in T-junctions under the same flow parameters. The inlet geometry was found to have limited influence on the behaviour of the flow while the flowrate of the water phase is considered more important
Reference:
Mbanjwa, MB, Land KJ, Jewell L, et al. 2010. Experimental observation of capillary instabilities of two phase flow in a microfluidic T-junction. 7th South African Conference on Computational and Applied Mechanics (SACAM10), Pretoria, 10-13 January 2010, pp 1-9
Mbanjwa, M., Land, K., Jewell, L., Moss, E., & Gledhill, I. M. (2010). Experimental observation of capillary instabilities of two phase flow in a microfluidic T-junction. SACAM 2010. http://hdl.handle.net/10204/4847
Mbanjwa, MB, KJ Land, L Jewell, EA Moss, and Irvy MA Gledhill. "Experimental observation of capillary instabilities of two phase flow in a microfluidic T-junction." (2010): http://hdl.handle.net/10204/4847
Mbanjwa M, Land K, Jewell L, Moss E, Gledhill IM, Experimental observation of capillary instabilities of two phase flow in a microfluidic T-junction; SACAM 2010; 2010. http://hdl.handle.net/10204/4847 .
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