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Physical analysis of the coherent motion during hysteretic static stall of Naca foil using proper orthogonal decomposition

Prothin, Sebastien and Djeridi, Henda and Billard, Jean-Yves Physical analysis of the coherent motion during hysteretic static stall of Naca foil using proper orthogonal decomposition. (2009) In: Second International conference on high Reynolds number vortex interactions, 31 August 2009 - 2 September 2009 (Brest, France).

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Abstract

At static stall of airfoil, an hysteretic behavior (corresponding to an abrupt loss of lift) has been observed leading to a partially detached flow (called state I, upper increasing angle branch) and massively separated flow (called state II, lower decreasing angle branch). In order to predict the type of hysteretic loop that may occur or to quantify unsteady oscillatory flow in the near wake, experiments have been performed to explore laminar separation, transition and detachment of the boundary layer (Mittal and Saxena, 2000) but the keyphysical properties of the vortex shedding establishment during hysteretic loop is not clearly understood.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-00881591
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole Navale (FRANCE)
French research institutions > Institut Français de Recherche pour l'Exploitation de la MER - IFREMER (FRANCE)
French research institutions > Institut de Recherche pour le Développement - IRD (FRANCE)
Other partners > Université de Bretagne Occidentale - UBO (FRANCE)
Other partners > Université Européenne de Bretagne - UEB (FRANCE)
Laboratory name:
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Deposited By: Sebastien Prothin
Deposited On:08 Nov 2013 14:08

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