Mbanjwa, MBLand, KJewell, LLGledhill, Irvy MA2011-02-032011-02-032011-01Mbanjwa, MB, Land, K, Jewell, LL and Gledhill, IMA. 2011. Experimental and numerical studies of emulsion formation in a microfluidic T-junction. AfriCOMP11: Second African Conference on Computational Mechanics, University of Cape Town, Cape Town, 5-8 January 2011, pp 4http://hdl.handle.net/10204/4817AfriCOMP11: Second African Conference on Computational Mechanics, University of Cape Town, Cape Town, 5-8 January 2011The production of water-in-oil (w/o) emulsions in T-junction microfluidic channels was studied through experiments and computational fluid dynamics (CFD). W/o emulsions were produced in the microchannels from deionised water and mineral oil. The interfacial tension of the system was controlled to ~ 0.003 N/m using oil-soluble surface active agent (surfactant). A 2-dimensional (2D) CFD model was setup for simulation of the generation of w/o emulsion in a 200µm wide T-junction microchannel. COMSOL Multiphysics, a program based on the finite element method (FEM), was used. The fluid-fluid interface was modelled using the conservative level set method (LSM), where the oil-water interface was implicitly represented by level set function. The simulated droplets differed in size from the droplets observed in experiments. The deviation between the CFD model and experiments was attributed to the modelling approach which excluded the variations in contact angle between the two fluids and the channel surface which occur in experimental conditions.enEmulsificationEmulsionMicrofluidicsMicrochannelsMonodisperseMicrotechnologiesModellingSimulationComputational fluid dynamicsAfriCOMP 2011Conference PresentationMbanjwa, M., Land, K., Jewell, L., & Gledhill, I. M. (2011). Experimental and numerical studies of emulsion formation in a microfluidic T-junction. http://hdl.handle.net/10204/4817Mbanjwa, MB, K Land, LL Jewell, and Irvy MA Gledhill. "Experimental and numerical studies of emulsion formation in a microfluidic T-junction." (2011): http://hdl.handle.net/10204/4817Mbanjwa M, Land K, Jewell L, Gledhill IM, Experimental and numerical studies of emulsion formation in a microfluidic T-junction; 2011. http://hdl.handle.net/10204/4817 .TY - Conference Presentation AU - Mbanjwa, MB AU - Land, K AU - Jewell, LL AU - Gledhill, Irvy MA AB - The production of water-in-oil (w/o) emulsions in T-junction microfluidic channels was studied through experiments and computational fluid dynamics (CFD). W/o emulsions were produced in the microchannels from deionised water and mineral oil. The interfacial tension of the system was controlled to ~ 0.003 N/m using oil-soluble surface active agent (surfactant). A 2-dimensional (2D) CFD model was setup for simulation of the generation of w/o emulsion in a 200µm wide T-junction microchannel. COMSOL Multiphysics, a program based on the finite element method (FEM), was used. The fluid-fluid interface was modelled using the conservative level set method (LSM), where the oil-water interface was implicitly represented by level set function. The simulated droplets differed in size from the droplets observed in experiments. The deviation between the CFD model and experiments was attributed to the modelling approach which excluded the variations in contact angle between the two fluids and the channel surface which occur in experimental conditions. DA - 2011-01 DB - ResearchSpace DP - CSIR KW - Emulsification KW - Emulsion KW - Microfluidics KW - Microchannels KW - Monodisperse KW - Microtechnologies KW - Modelling KW - Simulation KW - Computational fluid dynamics KW - AfriCOMP 2011 LK - https://researchspace.csir.co.za PY - 2011 T1 - Experimental and numerical studies of emulsion formation in a microfluidic T-junction TI - Experimental and numerical studies of emulsion formation in a microfluidic T-junction UR - http://hdl.handle.net/10204/4817 ER -