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Multiphase fluids are often present in a wide range of applications, including everyday products, such as food, cosmetics and detergents, or industrial systems, such as paints, polymer blends and petroleum emulsions. Properties and behaviour of these fluids depends on their microstructure, that can be strongly influenced by the imposed flow. In this work, an experimental approach is presented to investigate flow induced morphology of liquid-liquid fluids, by direct visualization and image analysis. Fluid microstructure can be modified by droplet deformation, break-up, coalescence or aggregation, that can be described according to few non-dimensional parameters comparing the flow intensity to the rheological and interfacial properties of the fluids. Different flow conditions have been analysed, including simple shear and capillary flow, and analysed according to available theoretical models, or phenomenological scalings.
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