Results 21 to 30 of about 61,385 (293)

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

Study of sheet flutter with large deformation in passage flow

open access: yesNihon Kikai Gakkai ronbunshu, 2016
This study reports about the numerical simulation of the sheet flutter in passage flow with large deformation and vortex shedding from trailing-edge. The equation of motion for flexible sheet has the Kelvin-Voigt-type material damping.
Akio YAMANO   +3 more
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

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

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

Interactions of point vortices in the Zabusky-McWilliams model with a background flow [PDF]

open access: yes, 2012
We combine a simple quasi-geostrophic flow model with the Zabusky-McWilliams theory of atmospheric vortex dynamics to address a hurricane-tracking problem of interest to the insurance industry.
Connaughton, Colm, Ockendon, J. R.
core   +1 more source

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

Coupling Between Thermal Oscillations in the Surface of a Micro-Cylinder and Vortex Shedding [PDF]

open access: yes, 2007
his article studies the coupling between prescribed thermal oscillations in the surface of a micro-cylinder and vortex shedding. We deal with the unsteady, laminar, compressible flow regime where the aerodynamics forces have a periodic behavior.
J. L. Montanes   +5 more
core   +2 more sources

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