An optical interferometric study of the wake of a bluff body
- 1 May 1991
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of Fluid Mechanics
- Vol. 226, 219-242
- https://doi.org/10.1017/s0022112091002367
Abstract
A Fizeau optical interferometer has been used to visualize the wake behind a circular cylinder at low Reynolds numbers Re. As well as showing the vortex shedding mechanism and development of the far wake in a new light, the shed vortex strength and age were derived from the results. The vortex velocity distributions, at downstream distances of 5 to 16 diameters, were found to be those of convected Oseen vortices. These measurements confirmed the existence of a transition at Re ≈ 100, which reflects the emergence of convection as the dominant process in the near wake.Keywords
This publication has 24 references indexed in Scilit:
- Oblique and parallel modes of vortex shedding in the wake of a circular cylinder at low Reynolds numbersJournal of Fluid Mechanics, 1989
- Large structure in the far wakes of two-dimensional bluff bodiesJournal of Fluid Mechanics, 1988
- The wakes of cylindrical bluff bodies at low Reynolds numberPhilosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1978
- Evidence of a Large Superfluid Vortex inPhysical Review Letters, 1977
- Stability of a circular cylinder oscillating in uniform flow or in a wakeJournal of Fluid Mechanics, 1973
- Measurements on turbulent vortices in a cylinder wakeProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1966
- The mechanics of the formation region of vortices behind bluff bodiesJournal of Fluid Mechanics, 1966
- An experimental investigation of the steady separated flow past a circular cylinderJournal of Fluid Mechanics, 1964
- Experiments on the flow past a circular cylinder at low Reynolds numbersJournal of Fluid Mechanics, 1959
- The flow past circular cylinders at low speedsProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1933