Comptes Rendus
no. 6-7
Separation flow control
Salient and smooth edge ramps inducing turbulent boundary layer separation: Flow characterization for control perspective
Antoine Debien1 ; Sandrine Aubrun1; Nicolas Mazellier1; Azeddine Kourta1
1Université d'Orléans, ENSI de Bourges, PRISME, EA 4229, 8, rue Léonard-de-Vinci, 45072 Orléans cedex 2, France
Part of the special issue: Flow separation control
Comptes Rendus. Mécanique, Flow separation control, Volume 342 (2014) no. 6-7, pp. 356-362

Turbulent boundary layer separation induced by a salient ramp and a smooth-edge one are characterized. Upstream from the separation point, the momentum thickness Reynolds number Reθ≈3500. Pressure distribution and gradient pressure distribution are analyzed on the overall model. Upstream from the ramp, boundary layer is characterized using hot-wire anemometry. Recirculation zone and unsteady behavior of separation point are evaluated using a PIV system. The shear layer roll-up and vortex shedding times scales obtained with cross hot-wire anemometry show good agreements with the literature. This study is a step toward the development of a robust control strategy undertaken in the frame of the ANR SePaCode project (2011–2014).

Received:
Accepted:
Published online:
DOI: 10.1016/j.crme.2014.05.003
Keywords: Separation, Ramp, Experiment

Antoine Debien  1 ; Sandrine Aubrun  1 ; Nicolas Mazellier  1 ; Azeddine Kourta  1

1 Université d'Orléans, ENSI de Bourges, PRISME, EA 4229, 8, rue Léonard-de-Vinci, 45072 Orléans cedex 2, France 
Antoine Debien; Sandrine Aubrun; Nicolas Mazellier; Azeddine Kourta. Salient and smooth edge ramps inducing turbulent boundary layer separation: Flow characterization for control perspective. Comptes Rendus. Mécanique, Flow separation control, Volume 342 (2014) no. 6-7, pp. 356-362. doi: 10.1016/j.crme.2014.05.003
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