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Metastable states of a cylinder wake adjacent to a free surface (1995)

Sheridan, J. ; Lin, J.-C. ; Rockwell, D.

[S.l.] : American Institute of Physics (AIP)

Physics of Fluids 7 (1995), S. 2099-2101

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ISSN: 1089-7666

Source: AIP Digital Archive

Topics: Physics

Notes: For the same Froude number and depth of submergence beneath a free surface, the wake of a cylinder exhibits two admissible states. The first state involves a jet-like flow generally attached to the free surface; it gives rise to a large-amplitude, quasistationary wave. In the second state, the jet is detached from the free-surface, which exhibits only mild distortion. The critical feature of the transformation between these two states involves the formation of a separated vorticity layer from the free-surface and its interaction with the vorticity layer from the surface of the cylinder. This transformation can occur spontaneously over a time scale much longer than the Kármán period. © 1995 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.868458

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