The structure of spatio-temporal defects in a spiral pattern in the Couette–Taylor flow

Disorder in spiral pattern arising in the counter-rotating Couette–Taylor flow has been investigated. It was revealed that in a certain range of flow control parameters, defects may be generated on the background of spirals periodically in time. Spatio-temporal structure of a single defect has been...

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Veröffentlicht in:Physics letters. A 2010-07, Vol.374 (33), p.3297-3303
Hauptverfasser: Ezersky, A.B., Abcha, N., Mutabazi, I.
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Sprache:eng
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Zusammenfassung:Disorder in spiral pattern arising in the counter-rotating Couette–Taylor flow has been investigated. It was revealed that in a certain range of flow control parameters, defects may be generated on the background of spirals periodically in time. Spatio-temporal structure of a single defect has been investigated in detail. A simple theoretical model based on asymptotic solution of the complex Ginzburg–Landau equation was proposed to explain characteristics of a defect. We found that, for a given super-criticality, defects appear at a definite value of the spiral wave phase.
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2010.06.019