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  Boundary zonal flow in rotating turbulent Rayleigh-Bénard convection

Zhang, X., van Gils, D., Horn, S., Wedi, M., Zwirner, L., Ahlers, G., et al. (2020). Boundary zonal flow in rotating turbulent Rayleigh-Bénard convection. Physical Review Letters, 124(8): 084505. doi:10.1103/PhysRevLett.124.084505.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0005-D997-C Version Permalink: https://hdl.handle.net/21.11116/0000-000D-00C5-4
Genre: Journal Article

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 Creators:
Zhang, X.1, Author           
van Gils, D.1, Author           
Horn, S.1, Author           
Wedi, M.2, Author           
Zwirner, L.2, Author           
Ahlers, G.1, Author           
Ecke, R. E.2, Author           
Weiss, S.1, Author           
Bodenschatz, E.1, Author                 
Shishkina, O.1, Author           
Affiliations:
1Laboratory for Fluid Dynamics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063287              
2Laboratory for Fluid Physics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063287              

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 Abstract: For rapidly rotating turbulent Rayleigh–Bénard convection in a slender cylindrical cell, experiments and direct numerical simulations reveal a boundary zonal flow (BZF) that replaces the classical large-scale circulation. The BZF is located near the vertical side wall and enables enhanced heat transport there. Although the azimuthal velocity of the BZF is cyclonic (in the rotating frame), the temperature is an anticyclonic traveling wave of mode one, whose signature is a bimodal temperature distribution near the radial boundary. The BZF width is found to scale like Ra1/4Ek2/3 where the Ekman number Ek decreases with increasing rotation rate.

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Language(s): eng - English
 Dates: 2020-02-272020-02-28
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.124.084505
 Degree: -

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Title: Physical Review Letters
Source Genre: Journal
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Pages: 6 Volume / Issue: 124 (8) Sequence Number: 084505 Start / End Page: - Identifier: -