Emergence of spatiotemporal dislocation chains in drifting patterns

Clerc, M. G.; et al.


One-dimensional patterns subjected to counter-propagative flows or speed jumps exhibit a rich and complex spatiotemporal dynamics, which is characterized by the perpetual emergence of spatiotemporal dislocation chains. Using a universal amplitude equation of drifting patterns, we show that this behavior is a result of a combination of a phase instability and an advection process caused by an inhomogeneous drift force. The emergence of spatiotemporal dislocation chains is verified in numerical simulations on an optical feedback system with a non-uniform intensity pump. Experimentally this phenomenon is also observed in a tilted quasi-one-dimensional fluidized shallow granular bed mechanically driven by a harmonic vertical vibration. (C) 2014 AIP Publishing LLC.

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Título según WOS: Emergence of spatiotemporal dislocation chains in drifting patterns
Título de la Revista: CHAOS
Volumen: 24
Número: 2
Editorial: AIP Publishing
Fecha de publicación: 2014
Idioma: English
URL: http://scitation.aip.org/content/aip/journal/chaos/24/2/10.1063/1.4883650


Notas: ISI