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Defect Dynamics for Spiral Chaos in Rayleigh-Bénard Convection

Cross, M. C. and Tu, Yuhai (1995) Defect Dynamics for Spiral Chaos in Rayleigh-Bénard Convection. Physical Review Letters, 75 (5). pp. 834-837. ISSN 0031-9007. doi:10.1103/PhysRevLett.75.834.

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A theory of the novel spiral chaos state recently observed in Rayleigh-Bénard convection is proposed in terms of the importance of invasive defects, i.e., defects that through their intrinsic dynamics expand to take over the system. The motion of well developed spiral defects is dominated by wave vector frustration, rather than a rotational motion driven by a vertical vorticity field. This leads to a continuum of spiral frequencies, and a spiral may rotate in either sense depending on the wave vector of its local environment. Results of extensive numerical work on equations modeling the convection system provide confirmation of these ideas.

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Additional Information:©1995 The American Physical Society Received 5 October 1994
Issue or Number:5
Record Number:CaltechAUTHORS:CROprl95a
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2358
Deposited By: Archive Administrator
Deposited On:29 Mar 2006
Last Modified:08 Nov 2021 19:47

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