43rd Fluid Dynamics Conference 2013
DOI: 10.2514/6.2013-3109
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The Influence of a Cylindrical Roughness Element on a Perturbed Laminar Boundary Layer

Abstract: Roughness induced transition in the leading edge region of airfoils is a considerable challenge in the design of highly efficient wind turbine blades especially with respect to different inflow turbulence levels. The present experiments are, therefore, devoted to the influence of a cylindrical roughness element of different heights on a quite (unperturbed) and a perturbed laminar boundary layer, respectively. For low roughness heights, which do not considerably affect the mean flow, no significant influence of… Show more

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