Journal of Wind Engineering and Industrial Aerodynamics
Effects of surface roughness on the universal Strouhal number over the wide Reynolds number range
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2022, European Journal of Mechanics, B/FluidsCitation Excerpt :Zdravkovich [1] made an overview of flow past smooth and rough cylinders by means of Strouhal number and drag analysis. Adachi [2] measured Strouhal numbers on eight cylinders with various surface roughness over a wide range of Reynolds numbers. Buresti [3] studied the influence of surface roughness on transition between subcritical up to postcritical flow regimes around circular cylinders.
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2021, Marine StructuresCitation Excerpt :The applied surface roughness was in fact only used as a passive instrument to provoke an artificial transition and an earlier separation of the surface boundary layer in order to simulate high-Reynolds-number flow phenomena at physically low Reynolds numbers. The mean drag force and the vortex shedding frequency up to the supercritical/upper transition flow state (see Section 2 for a detailed description of the various flow states) were for example studied in Refs. [23,28–33] by applying uniformly distributed dimples and grooves at the cylinder surface. To simulate the flow phenomena around a circular cylinder in the transcritical Reynolds-number regime, Ribeiro [34] used span-wise roughness stripes at a single angular position or at multiple circumferential angles.