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Robust wall states in rapidly rotating Rayleigh–Bénard convection.

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Title: Robust wall states in rapidly rotating Rayleigh–Bénard convection.
Authors: Favier, Benjamin1 (AUTHOR) favier@irphe.univ-mrs.fr, Knobloch, Edgar2 (AUTHOR)
Source: Journal of Fluid Mechanics. 7/25/2020, Vol. 895, p1-15. 15p.
Subjects: Rayleigh-Bénard convection, Rayleigh number, Turbulence
Abstract: We show, using direct numerical simulations with experimentally realizable boundary conditions, that wall modes in Rayleigh–Bénard convection in a rapidly rotating cylinder persist even very far from their linear onset. These nonlinear wall states survive in the presence of turbulence in the bulk and are robust with respect to changes in the shape of the boundary of the container. In this sense, these states behave much like the topologically protected states present in two-dimensional chiral systems even though rotating convection is a three-dimensional nonlinear driven dissipative system. We suggest that the robustness of this nonlinear state may provide an explanation for the strong zonal flows observed recently in experiments and simulations of rapidly rotating convection at high Rayleigh number. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Fluid Mechanics is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 144728304
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Robust wall states in rapidly rotating Rayleigh–Bénard convection.
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  Data: <searchLink fieldCode="AR" term="%22Favier%2C+Benjamin%22">Favier, Benjamin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> favier@irphe.univ-mrs.fr</i><br /><searchLink fieldCode="AR" term="%22Knobloch%2C+Edgar%22">Knobloch, Edgar</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Fluid+Mechanics%22">Journal of Fluid Mechanics</searchLink>. 7/25/2020, Vol. 895, p1-15. 15p.
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– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: We show, using direct numerical simulations with experimentally realizable boundary conditions, that wall modes in Rayleigh–Bénard convection in a rapidly rotating cylinder persist even very far from their linear onset. These nonlinear wall states survive in the presence of turbulence in the bulk and are robust with respect to changes in the shape of the boundary of the container. In this sense, these states behave much like the topologically protected states present in two-dimensional chiral systems even though rotating convection is a three-dimensional nonlinear driven dissipative system. We suggest that the robustness of this nonlinear state may provide an explanation for the strong zonal flows observed recently in experiments and simulations of rapidly rotating convection at high Rayleigh number. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Fluid Mechanics is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1017/jfm.2020.310
    Languages:
      – Code: eng
        Text: English
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        PageCount: 15
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    Subjects:
      – SubjectFull: Rayleigh-Bénard convection
        Type: general
      – SubjectFull: Rayleigh number
        Type: general
      – SubjectFull: Turbulence
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      – TitleFull: Robust wall states in rapidly rotating Rayleigh–Bénard convection.
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            NameFull: Favier, Benjamin
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            NameFull: Knobloch, Edgar
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            – D: 25
              M: 07
              Text: 7/25/2020
              Type: published
              Y: 2020
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              Value: 895
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