We study the orientational behavior of a hinged cylinder suspended in a water tunnel in the presence of an incompressible flow with Reynolds number (Re), based on particle dimensions, ranging between 100 and 6000 and non-dimensional inertia of the body(I*) in the range 0.1-0.6. The cylinder displays four unique features, which include: steady orientation, random oscillations, periodic oscillations and autorotation.We illustrate these features displayed by the cylinder using a phase diagram which captures the observed phenomena as a function of Re and I*. We identify critical Re and I* to distinguish the different behaviors of the cylinders. We used the hydrogen bubble flow visualization technique to show vortex shedding structure in the cylinder's wake which results in these oscillations.
|Title of host publication||Advances in Mathematical Fluid Mechanics|
|Subtitle of host publication||Dedicated to Giovanni Paolo Galdi on the Occasion of his 60th Birthday|
|Publisher||Springer Berlin Heidelberg|
|Number of pages||11|
|State||Published - 1 Dec 2010|
- Vortex Induced Oscillation
- Vortex Shedding