The formation of vortex streets
- 1 May 1962
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of Fluid Mechanics
- Vol. 13 (1) , 1-20
- https://doi.org/10.1017/s0022112062000452
Abstract
The formation of vortex streets in the wake of two-dimensional bluff bodies can be explained by considering the non-linear interaction of two infinite vortex sheets, initially a fixed distance, h, apart, in an inviscid incompressible fluid. The interaction of such sheets (represented in the calculation by rows of point-vortices) is examined in detail for various ratios of h to the wavelength, a, of the initial disturbance. The number and strength of the concentrated regions of vorticity formed in the interaction depend very strongly on h/a. The non-linear interaction of the two vortex sheets explains both the cancellation of vorticity and vortex-street broadening observed in the wakes of bluff bodies.Keywords
This publication has 5 references indexed in Scilit:
- Do vortex sheets roll up?Rendiconti del Circolo Matematico di Palermo Series 2, 1959
- Einfluß großer Zähigkeit bei Strömung um ZylinderForschung im Ingenieurwesen, 1936
- The formation of vortices from a surface of discontinuityProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1931
- XLII.The structure of vortex sheetsJournal of Computers in Education, 1928
- On the flow of air behind an inclined flat plate of infinite spanProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1927