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Vortex Streets on a Sphere [PDF]
Journal of Applied Mathematics, 2011 We consider flows on a spherical surface and use a transformation to transport some well‐known periodic two‐dimensional vortex streets to that spherical surface to arrive at some new expressions for vortex streets on a sphere.
Ghada Alobaidi, Roland Mallier
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Interaction of vortex streets with a downstream wing [PDF]
Physical Review Fluids, 2022 The unsteady aerodynamics of a wing in the wake of a periodically plunging upstream airfoil was investigated in water tunnel experiments. By varying the frequency and the amplitude of the plunge oscillations, vortex-street configurations with varying wavelength and circulation were generated.
Ismet Gursul, Burak Turhan
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Nonstationary Vortex Streets in Shear Flows
Izvestiya - Atmospheric and Oceanic Physics, 2019 Spatially periodic vortex systems that form due to unstable shear flows are called vortex streets. A number of exact and asymptotic solutions of two-dimensional hydrodynamic equations describing nonstationary vortex streets have been constructed. It is shown that the superposition of the flow with a constant horizontal shear and its perturbations in ...
M V Kalashnik, O G Chkhetiani
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A New Theory of Vortex Streets [PDF]
Proceedings of the National Academy of Sciences of the United States of America, 1952 exaly +3 more sources
Physical Review Fluids, 2023 This paper is associated with a poster winner of a 2022 American Physical Society's Division of Fluid Dynamics (DFD) Milton van Dyke Award for work presented at the DFD Gallery of Fluid Motion. ; Marangoni-driven flows arise from spatial variations of surface tension along a free surface, which usually occurs where temperature or concentration ...
Meng Shi, Sigurdur T. Thoroddsen
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Properties of a Vortex Street of Finite Vortices [PDF]
SIAM Journal on Scientific and Statistical Computing, 1981 Steady solutions of the Euler equations are calculated for an infinite array of vortices, consisting of two staggered parallel rows of identical vortices of finite area and uniform vorticity. These models are similar to the “vortex streets” studied theoretically by von Karman and others, except that here vortices of finite rather than infinitesimal ...
Saffman, P. G., Schatzman, J. C.
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Periodic Vortex Streets and Complex Monodromy [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2012 The explicit constructions of periodic and doubly periodic vortex relative equilibria using the theory of monodromy-free Schrödinger operators are described. Several concrete examples with the qualitative analysis of the corresponding travelling vortex streets are given.
Hemery, Adrian D., Veselov, Alexander P.
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Axial Flow in a Vortex in Karman Vortex Street.
Journal of the Japan Society for Aeronautical and Space Sciences, 1996 The vortex filaments in a Karman vortex street are usually not parallel to the axis of a circular cylinder perpendicular to a uniform flow in a low speed wind tunnel, but incline to the axis of the cylinder. The axial flow to the upstream direction in a vortex was observed by means of flow visualization in each vortex of the Karman vortex street.
OHKURA, Nobuyuki +2 more
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Physical Review FluidsThis paper is associated with a poster winner of a 2024 American Physical Society's Division of Fluid Dynamics (DFD) Gallery of Fluid Motion Award for work presented at the DFD Gallery of Fluid Motion. The original poster is available online at the Gallery of Fluid Motion,
Umang N. Patel +2 more
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On the phenomenon of vortex street breakdown
Journal of Fluid Mechanics, 1971 A von Kármán vortex street generated in the usual way was subjected to a deceleration, thereby changing the ratio of longitudinal to lateral spacing between the vortices. Distortion of the individual vortices followed which resulted in annihilation of concentrated vortex regions and creation of a stationary wake flow.
Durgin, William W., Karlsson, Sture K.F.
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