European Turbulence Conference 14

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Non modal subcritical transition of channel entry flow}

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Developing channel flows are of interest in a large number of application areas. Many aspects of these flows are not yet fully understood, such as the stability characteristics at subcritical Reynolds number. Using massively parallel supercomputers, it is now possible to device new numerical experiments to study this kind of flow, that would have been impossible a few years ago. This work presents DNS of bypass transition of a subcritical channel entrance flow where transition occurs inside the boundary layers of the
developing entry flow.


Marc BUFFAT    
LMFA, Université de Lyon,Université Claude-Bernard Lyon 1

Lionel Le Penven    
LMFA, Université de Lyon, CNRS

Anne Cadiou    
LMFA, Université de Lyon, CNRS


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