Self-organization in circular shear layers

Autor:	Evangelos A. Coutsias, Jens-Peter Lynov, Keith Bergeron, Anders Nielsen
Rok vydání:	1996
Předmět:	Physics Self-organization Reynolds number Plasma Mechanics Condensed Matter Physics Enstrophy Atomic and Molecular Physics and Optics Physics::Fluid Dynamics symbols.namesake Nonlinear system Classical mechanics Shear (geology) Quasiperiodic function symbols Mathematical Physics Bifurcation
Zdroj:	Physica Scripta. :33-37
ISSN:	1402-4896 0031-8949
DOI:	10.1088/0031-8949/1996/t67/007
Popis:	Experiments on forced circular shear layers performed in both magnetized plasmas and in rotating fluids reveal qualitatively similar self-organization processes leading to the formation of patterns of coherent vortical structures with varying complexity. In this paper results are presented from both weakly nonlinear analysis and full numerical simulations that closely reproduce the experimental observations. Varying the Reynolds number leads to bifurcation sequences accompanied by topological changes in the distribution of the coherent structures as well as clear transitions in the total energy and enstrophy of the system. Various oscillating and quasiperiodic states have been found, and regimes have been investigated that so far have been experimentally inaccessible.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f7c9f270dc162fed1e36aa26b9b16694 https://doi.org/10.1088/0031-8949/1996/t67/007 Zobrazit plný text záznamu