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- W2533487632 endingPage "032043" @default.
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- W2533487632 abstract "In the present work large eddy simulations of the flow past a rough cylinder are performed at a Reynolds number of Re = 4.2 × 105 and an equivalent sand-grain surface roughness height ks = 0.02D. In order to determine the effects of the surface roughness on the boundary layer transition and as a consequence on the wake topology, results are compared to those of the smooth cylinder. It is shown that surface roughness triggers the transition to turbulence in the boundary layer, thus leading to an early separation caused by the increased drag and momentum deficit. Thus, the drag coefficient increases up to CD ≈ 1.122 (if compared to the smooth cylinder it should be about CD ≈ 0.3 — 0.5). The wake topology also changes and resembles more the subcritical wake observed for the smooth cylinder at lower Reynolds numbers than the expected critical wake at this Reynolds number." @default.
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- W2533487632 date "2016-09-01" @default.
- W2533487632 modified "2023-09-29" @default.
- W2533487632 title "Numerical simulation of roughness effects on the flow past a circular cylinder" @default.
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- W2533487632 doi "https://doi.org/10.1088/1742-6596/745/3/032043" @default.
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