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Effects of cylinder Reynolds number on the turbulent horseshoe vortex system and near wake of a surface-mounted circular cylinder
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kirkil, Gokhan Constantinescu, George |
| Copyright Year | 2014 |
| Abstract | The turbulent horseshoe vortex (HV) system and the near-wake flow past a circular cylinder mounted on a flat bed in an open channel are investigated based on the results of eddy-resolving simulations and supporting flow visualizations. Of particular interest are the changes in the mean flow and turbulence statistics within the HV region as the necklace vortices wrap around the cylinder's base and the variation of the mean flow and turbulence statistics in the near wake, in between the channel bed and the free surface. While it is well known that the drag crisis induces important changes in the flow past infinitely long circular cylinders, the changes are less understood and more complex for the case of flow past a surface-mounted cylinder. This is because even at very high cylinder Reynolds numbers, ReD, the flow regime remains subcritical in the vicinity of the bed surface due to the reduction of the incoming flow velocity within the bottom boundary layer. The paper provides a detailed discussion of the . |
| Starting Page | 075102 |
| Ending Page | 075102 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1063/1.4923063 |
| Volume Number | 27 |
| Alternate Webpage(s) | http://absimage.aps.org/image/DFD14/MWS_DFD14-2014-002161.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Synopsis |
