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  Directed percolation phase transition to sustained turbulence in Couette flow.

Lemoult, G., Shi, L., Avila, K., Jalikop, S. V., Avila, M., & Hof, B. (2016). Directed percolation phase transition to sustained turbulence in Couette flow. Nature Physics, 12(3), 254-258. doi:10.1038/nphys3675.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-3BB0-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-3E22-8
Genre: Journal Article

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Lemoult, G., Author
Shi, Liang1, Author              
Avila, Kerstin1, Author              
Jalikop, S. V., Author
Avila, Marc1, Author              
Hof, Björn1, Author              
Affiliations:
1Max Planck Research Group Complex Dynamics and Turbulence, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063292              

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Free keywords: Fluid dynamics; Phase transitions and critical phenomena
 Abstract: Turbulence is one of the most frequently encountered non-equilibrium phenomena in nature, yet characterizing the transition that gives rise to turbulence in basic shear flows has remained an elusive task. Although, in recent studies, critical points marking the onset of sustained turbulence1, 2, 3 have been determined for several such flows, the physical nature of the transition could not be fully explained. In extensive experimental and computational studies we show for the example of Couette flow that the onset of turbulence is a second-order phase transition and falls into the directed percolation universality class. Consequently, the complex laminar–turbulent patterns distinctive for the onset of turbulence in shear flows4, 5 result from short-range interactions of turbulent domains and are characterized by universal critical exponents. More generally, our study demonstrates that even high-dimensional systems far from equilibrium such as turbulence exhibit universality at onset and that here the collective dynamics obeys simple rules.

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Language(s): eng - English
 Dates: 2016-02-152016-03
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/nphys3675
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Title: Nature Physics
Source Genre: Journal
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Pages: - Volume / Issue: 12 (3) Sequence Number: - Start / End Page: 254 - 258 Identifier: -