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research article

Edge states intermediate between laminar and turbulent dynamics in pipe flow

Schneider, Tobias M  
•
Eckhardt, Bruno
2009
Philosophical Transactions A: Mathematical, Physical and Engineering Sciences

We studied the dynamics near the boundary between laminar and turbulent dynamics in pipe flow. This boundary contains invariant dynamical states that are attracting when the dynamics is confined to the boundary. These states can be found by controlling a single quantity, in our case the energy content. The edge state is dominated by two downstream vortices and shows intrinsic chaotic dynamics. With increasing Reynolds number the separation between the edge state and turbulence increases. We can track it down to Re=1900, where the turbulent lifetimes are short enough that spontaneous decay can also be seen in experiments.

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Type
research article
DOI
10.1098/rsta.2008.0216
Author(s)
Schneider, Tobias M  
Eckhardt, Bruno
Date Issued

2009

Published in
Philosophical Transactions A: Mathematical, Physical and Engineering Sciences
Volume

367

Issue

1888

Start page

577

End page

587

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
ECPS  
Available on Infoscience
December 7, 2015
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/121536
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