Zobrazeno 1 - 10
of 343
pro vyhledávání: '"Barkley D"'
Publikováno v:
Journal of Fluid Mechanics, 964, A17, 2023
Low Reynolds number turbulence in wall-bounded shear flows \emph{en route} to laminar flow takes the form of oblique, spatially-intermittent turbulent structures. In plane Couette flow, these emerge from uniform turbulence via a spatiotemporal interm
Externí odkaz:
http://arxiv.org/abs/2211.15579
Publikováno v:
J. Fluid Mech., 964, A16 (2023)
Low Reynolds number turbulence in wall-bounded shear flows en route to laminar flow takes the form of spatially intermittent turbulent structures. In plane shear flows, these appear as a regular pattern of alternating turbulent and quasi-laminar flow
Externí odkaz:
http://arxiv.org/abs/2211.14841
Publikováno v:
Phil. Trans. R. Soc. A380: 20210036 (2022)
Transitional localised turbulence in shear flows is known to either decay to an absorbing laminar state or proliferate via splitting. The average passage times from one state to the other depend super-exponentially on the Reynolds number and lead to
Externí odkaz:
http://arxiv.org/abs/2109.01476
Publikováno v:
Phys. Rev. E 81, 036322 (2010); also Phys. Rev. E 81, 069903(E) (2010)
The axisymmetric flow in an aspect-ratio-one cylinder whose upper and lower bounding disks are maintained at different temperatures and rotate at equal and opposite velocities is investigated. In this combined Rayleigh-Benard/von Karman problem, the
Externí odkaz:
http://arxiv.org/abs/1004.0187
Rotating spiral waves are a form of self-organization observed in spatially extended systems of physical, chemical, and biological nature. In the presence of a small perturbation, the spiral wave's centre of rotation and fiducial phase may change ove
Externí odkaz:
http://arxiv.org/abs/0909.5372
Spiral waves in active media react to small perturbations as particle-like objects. Here we apply the asymptotic theory to the interaction of spiral waves with a localized inhomogeneity, which leads to a novel prediction: drift of the spiral rotation
Externí odkaz:
http://arxiv.org/abs/0907.5006
Rotating spiral waves are a form of self-organization observed in spatially extended systems of physical, chemical, and biological nature. A small perturbation causes gradual change in spatial location of spiral's rotation center and frequency, i.e.
Externí odkaz:
http://arxiv.org/abs/0810.4721
Autor:
Wheeler, P., Barkley, D.
A computational linear stability analysis of spiral waves in a reaction-diffusion equation is performed on large disks. As the disk radius R increases, eigenvalue spectra converge to the absolute spectrum predicted by Sandstede and Scheel. The conver
Externí odkaz:
http://arxiv.org/abs/nlin/0508031
We explore situations in which certain stochastic and high-dimensional deterministic systems behave effectively as low-dimensional dynamical systems. We define and study moment maps, maps on spaces of low-order moments of evolving distributions, as a
Externí odkaz:
http://arxiv.org/abs/cond-mat/0508551
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