Boundary layer turbulence in experiments on quasi Keplerian flows Journal Article

Author(s): Lopez, Jose; Avila, Marc
Article Title: Boundary layer turbulence in experiments on quasi Keplerian flows
Affiliation IST Austria
Abstract: Most flows in nature and engineering are turbulent because of their large velocities and spatial scales. Laboratory experiments on rotating quasi-Keplerian flows, for which the angular velocity decreases radially but the angular momentum increases, are however laminar at Reynolds numbers exceeding one million. This is in apparent contradiction to direct numerical simulations showing that in these experiments turbulence transition is triggered by the axial boundaries. We here show numerically that as the Reynolds number increases, turbulence becomes progressively confined to the boundary layers and the flow in the bulk fully relaminarizes. Our findings support that turbulence is unlikely to occur in isothermal constant-density quasi-Keplerian flows.
Keywords: Taylor-Couette flow; rotating flows; turbulent boundary layers
Journal Title: Journal of Fluid Mechanics
Volume: 817
ISSN: 1469-7645
Publisher: Cambridge University Press  
Date Published: 2017-04-25
Start Page: 21
End Page: 34
DOI: 10.1017/jfm.2017.109
Notes: This work was partially supported by the Spanish Government grant FIS2013-40880-P and BES-2010-04154. We are grateful to red EspaƱola de SupercomputaciĆ³n (RES) and the Regionales Rechenzentrum Erlangen (RRZE) for the computational resources provided.
Open access: yes (repository)
IST Austria Authors
  1. Jose Lopez
    2 Lopez
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