Results 11 to 20 of about 61,385 (293)
Vortex scattering in the point vortex model [PDF]
, 2019 Here we provide both a theoretical and numerical analysis of scattering in vortex collisionsusing the 2-D point vortex model, where both the dipole-vortex collision is considered in the three vortex case, and the dipole-dipole collision is considered in the four vortex case.
Lydon, Karl
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The interaction of a point vortex with a wall-bounded vortex layer [PDF]
Journal of Fluid Mechanics, 1997 The interaction of a point vortex with a layer of constant vorticity, bounded below by a wall and above by an irrotational flow, is investigated as a model of vortex–boundary layer interaction. This model calculates both the evolution of the interface which separates the vortex layer from the irrotational flow and the trajectory of the ...
Atassi, Oliver V. +2 more
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Statistics and dynamics of blockings with a point vortex model [PDF]
Tellus: Series A, Dynamic Meteorology and Oceanography, 2018 We investigate a reduced point vortex model for statistical and dynamical analyses of atmospheric blocking phenomena. Thereby, we consider High-over-low and Omega blocking as relative equilibria of two and three point vortices.
Mirjam Hirt +3 more
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Random splitting of point vortex flows [PDF]
Electronic Communications in Probability, 2023 We consider a stochastic version of the point vortex system, in which the fluid velocity advects single vortices intermittently for small random times. Such system converges to the deterministic point vortex dynamics as the rate at which single components of the vector field are randomly switched diverges, and therefore it provides an alternative ...
Agazzi, Andrea +2 more
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Uniqueness for the Vortex-Wave System When the Vorticity Is Constant Near the Point Vortex [PDF]
SIAM Journal on Mathematical Analysis, 2009 We prove uniqueness for the vortex-wave system with a single point vortex introduced by Marchioro and Pulvirenti in the case where the vorticity is initially constant near the point vortex. Our method relies on the Eulerian approach for this problem and in particular on the formulation in terms of the velocity.
Lacave, Christophe, Miot, Evelyne
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Volume Transport by a 3D Quasigeostrophic Heton
Fluids, 2022 Oceanic flows self-organize into coherent vortices, which strongly influence their transport and mixing properties. Counter-rotating vortex pairs can travel long distances and carry trapped fluid as they move. These structures are often modeled as hetons,
Adhithiya Sivakumar, Jeffrey B. Weiss
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Hölder estimate for the 3 point-vortex problem with alpha-models
Comptes Rendus. Mathématique, 2023 In this article we study quasi-geostrophic point-vortex systems in a general setting called alpha point-vortex. We study a particular case of vortex collapses called mono-scale collapses and this study gives the Hölder regularity for the $3$-vortex ...
Godard-Cadillac, Ludovic
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Mathematics, 2020 The three-layer version of the contour dynamics/surgery method is used to study the interaction mechanisms of a large-scale surface vortex with a smaller vortex/vortices of the middle layer (prototypes of intrathermocline vortices in the ocean) belonging
Mikhail A. Sokolovskiy +2 more
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Convergence of the point vortex method for 2-D vortex sheet [PDF]
Mathematics of Computation, 2000 We give an elementary proof of the convergence of the point vortex method (PVM) to a classical weak solution for the two-dimensional incompressible Euler equations with initial vorticity being a finite Radon measure of distinguished sign and the initial velocity of locally bounded energy.
Jian-Guo Liu 0006, Zhouping Xin
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Investigation of Snow Deposition on the Railway Cuttings During the Snowdrift
Frontiers in Earth Science, 2022 This study confirmed a mixture multiphase model based on the Euler–Euler method to predict snow deposition in road cuttings. A scaled model experiment was conducted in the Mayitas region of Xinjiang to verify the numerical simulation accuracy, which ...
Wenyong Ma +6 more
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