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- W2244982383 abstract "The role of aerofoil corrugation at Re = 34, 000 with flight manoeuvres at low Angles-of- Attack (AoA) is presented. The impact of surface corrugations in sustaining high aerodynamic efficiency relative to a flat plate configuration is examined for a Micro Aerial Vehicle (MAV) application. A Computational Fluid Dynamics (CFD) methodology scheme is first validated to ensure the aerodynamic data used in support of the noted findings are accurate. A grid dependency analysis confirmed the establishment of an accurate CFD structure with solver output that is within an acceptable wind tunnel error tolerance limit. Following CFD validation, the examination of the critical flow features that represent corrugated geometries is modeled. It is shown that corrugation facilitates extended regions of flow attachment over the aerofoil due to the generation of flow recirculation bubbles that are notable in the valleys. These have the effect of transforming the aerofoil contour into a streamlined shape such that the flow patterns that are present outside of the valleys flow smoothly along the body surface. The behaviour of the boundary layer further showed that energised flow patterns benefit corrugated geometries. At near-wall regions, high turbulent kinetic energy (TKE) facilitates flow suction by pumping in high-speed fluid from the outer freestream region into the near-wall area. This negates the onset of premature flow separation at the leading edge and results in high lift performances. The corrugated geometry has high friction drag relative to a flat plate, hence the aerodynamic efficiency is restricted. Accordingly the analysis confirms that the aerodynamic performances of a corrugated aerofoil are limited at low AoA flight points relative to a flat plate at the modeled Re test point." @default.
- W2244982383 created "2016-06-24" @default.
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- W2244982383 date "2013-01-01" @default.
- W2244982383 modified "2023-09-23" @default.
- W2244982383 title "A computational fluid dynamic study of a bioinspired corrugated aerofoil for micro air vehicles" @default.
- W2244982383 hasPublicationYear "2013" @default.
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