Results 21 to 30 of about 4,674,421 (280)

The interaction of a point vortex with a wall-bounded vortex layer

open access: yesJournal 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
openaire   +2 more sources

Fixed point property of amenable planar vortexes

open access: yesApplied General Topology, 2021
This article introduces free group representations of planar vortexes in a CW space that are a natural outcome of results for amenable groups and fixed points found by M.M. Day during the 1960s and a fundamental result for fixed points given by L.E.J. Brouwer.
James Francis Peters, Tane Vergili
openaire   +6 more sources

The motion of point vortices on closed surfaces [PDF]

open access: yes, 2015
We develop a mathematical framework for the dynamics of a set of point vortices on a class of differentiable surfaces conformal to the unit sphere. When the sum of the vortex circulations is non-zero, a compensating uniform vorticity field is required to
Dritschel, David Gerard, Boatto, S
core   +1 more source

Propagation-invariant vortex Airy beam whose singular point follows its main lobe

open access: yesNew Journal of Physics, 2021
We propose and demonstrate a novel vortex Airy beam which is a superposition of an Airy beam and its laterally sheared beam with a π /2 phase shift.
Masato Suzuki   +3 more
doaj   +1 more source

Fate of Dirac points in a vortex superlattice [PDF]

open access: yesPhysical Review B, 2011
We consider noninteracting fermions on the honeycomb lattice in the presence of a magnetic vortex superlattice. It is shown that depending on the superlattice periodicity, a gap may open at zero energy. We derive an expression of the gap in the small-flux limit but the main qualitative features are found to be valid for arbitrary fluxes.
Kamfor, M.   +3 more
openaire   +2 more sources

Vortex Interactions Subjected to Deformation Flows: A Review

open access: yesFluids, 2019
Deformation flows are the flows incorporating shear, strain and rotational components. These flows are ubiquitous in the geophysical flows, such as the ocean and atmosphere.
Konstantin V. Koshel   +2 more
doaj   +1 more source

Decaying quantum turbulence in a two-dimensional Bose-Einstein condensate at finite temperature

open access: yesSciPost Physics, 2020
We numerically model decaying quantum turbulence in two-dimensional disk-shaped Bose-Einstein condensates, and investigate the effects of finite temperature on the turbulent dynamics.
Andrew J. Groszek, Matthew J. Davis, Tapio P. Simula
doaj   +1 more source

Time-resolved plasmon-assisted generation of optical-vortex pulses

open access: yesScientific Reports, 2023
The microscopic mechanism of the light-matter interactions that induce orbital angular momentum (OAM) in electromagnetic fields is not thoroughly understood.
Esra Ilke Albar   +5 more
doaj   +1 more source

Asymmetric dual Bloch point domain walls in cylindrical magnetic nanowires

open access: yesAPL Materials, 2022
Cylindrical magnetic nanowires have been studied extensively over the past ten years due to the presence of domain walls with novel topology and outstanding dynamic properties.
J. Askey, M. Hunt, W. Langbein, S. Ladak
doaj   +1 more source

On the beta-drift of an initially circular vortex patch [PDF]

open access: yes, 2001
The nonlinear inviscid evolution of a vortex patch in a single-layer quasi-geostrophic fluid and within a background planetary vorticity gradient is examined numerically at unprecedented spatial resolution.
Lam, J Sai-Lap   +4 more
core   +1 more source

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