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- W3104064293 abstract "The study of vortex flows around solid obstacles is of considerable interest from both a theoretical and practical perspective. One geometry that has attracted renewed attention recently is that of vortex flows past a circular cylinder placed above a plane wall, where a stationary recirculating eddy can form in front of the cylinder, in contradistinction to the usual case (without the plane boundary) for which a vortex pair appears behind the cylinder. Here we analyze the problem of vortex flows past a cylinder near a wall through the lenses of the point-vortex model. By conformally mapping the fluid domain onto an annular region in an auxiliary complex plane, we compute the vortex Hamiltonian analytically in terms of certain special functions related to elliptic theta functions. A detailed analysis of the equilibria of the model is then presented. The location of the equilibrium in front of the cylinder is shown to be in qualitative agreement with the experimental findings. We also show that a topological transition occurs in phase space as the parameters of the systems are varied" @default.
- W3104064293 created "2020-11-23" @default.
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- W3104064293 date "2017-08-01" @default.
- W3104064293 modified "2023-09-30" @default.
- W3104064293 title "Vortex motion around a circular cylinder above a plane" @default.
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- W3104064293 doi "https://doi.org/10.1063/1.4996241" @default.
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