Fluid flow in microgeometries

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The flow in microgeometries is of interest in applications such as bioanalysis systems, micro-valves and flow through porous media. The flow is generally straight-forward to predict since the flow is laminar and the geometries are often simple. However when it comes to flow through dual scale porous media, the flow gets harder to predict. The flow through porous media can be applied to areas such as composites manufacturing, paper making and drying of iron ore pellets. The aim of this project is therefore to study flows in micro geometries with numerical and experimental methods to gain increased understanding of porous media flow. The optical method best suited for this kind of geometries is micro particle image velocimetry and the numerical calculations are done with computational fluid dynamics. Micro- PIV is used to investigate the flow in channels with a single fibre and with fibre arrays of different p...