We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Reorganization of Coherent Structures Downstream a Circular Cylinder Located between Two Parallel Walls.
- Authors
Rehimi, F.; Aloui, F.; Nasrallah, S. B.
- Abstract
Experiments were performed at low Reynolds numbers in the range 75⩽ Re ⩽ 275 in the wake of a circular cylinder of dc diameter placed symmetrically between two parallel walls of H height. 2D2C particle image velocimetry (PIV) was used to investigate the flow downstream the cylinder. In the unsteady flow regime downstream the cylinder, the detached primary vortices (Pi) interact with walls generating secondary ones (Pi') and modify the cylinder wake dynamic. The kinematical properties (advection velocity, circulation, rotation kinetic energy, etc.) of the generated secondary vortices are studied and compared with the primary ones in order to show how the walls influence the von Kármán vortex street. The authors propose here a relation between the circulations and kinetic energies of primary and secondary vortices.
- Subjects
ENGINE cylinder aerodynamics; REYNOLDS number; TURBULENCE; DOWNSTREAM Response to Imposed Flow Transformations; STOPPING power (Nuclear physics)
- Publication
Journal of Applied Fluid Mechanics, 2011, Vol 4, Issue 3, p51
- ISSN
1735-3572
- Publication type
Article