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HYSTERESIS AND VORTICES DYNAMICS IN A TURBULENT FLOW
Authors: Burguete, J. (J.)
Torre, A. (Alberto) de la
Issue Date: Aug-2009
ISSN: 0218-1274
Citation: Int. J. of Bif. and Chaos, 19, 8 (2695-2703)
Abstract
Recent results about the slow dynamics present in a fully developed turbulent flow are reported. In a previous paper [de la Torre & Burguete, 2007] we showed that the mean velocity field in a turbulent flow bifurcates subcritically breaking some symmetries of the problem and becomes time-dependent because of equatorial vortices moving with a precession movement. This subcriticality produces a bistable regime, whose main characteristics were successfully reproduced using a three-well potential model with additive noise. In this paper we present the characterization of the hysteresis region, not previously observed, in this bifurcation. This hysteresis appears only for an extremely small range of parameters.
Permanent link: http://hdl.handle.net/10171/6176
Appears in Collections:DA - Ciencias - Física - Artículos de Revista

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