Interaction of a deep-water wave with a vertical cylinder: effect of self-excited vibrations on quantitative flow patterns
JOURNAL OF FLUID MECHANICS, vol.572, pp.189-217, 2007 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 572
- Publication Date: 2007
- Doi Number: 10.1017/s0022112006003399
- Journal Name: JOURNAL OF FLUID MECHANICS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.189-217
- Dokuz Eylül University Affiliated: Yes
Abstract
Interaction of a deep-water wave with a cylinder gives rise to ordered patterns of the flow structure, which are quantitatively characterized using a technique of high-image-density particle image velocimetry. When the cylinder is stationary, the patterns of instantaneous flow structure take on increasingly complex forms for increasing Keulegan-Carpenter number KC. These patterns involve stacking of small-scale vorticity concentrations, as well as large-scale vortex shedding. The time-averaged consequence of these patterns involves, at sufficiently high KC, an array of vorticity concentrations about the cylinder.