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LARGE-EDDY SIMULATION OF PASSIVE SHOCK-WAVE/BOUNDARY-LAYER INTERACTION CONTROL

Vito Pasquariello
Technical University of Munich Department of Mechanical Engineering Chair of Aerodynamics and Fluid Mechanics Boltzmannstr. 15, 85748 Garching bei Munchen, Germany

Jan Matheis
Institute of Aerodynamics and Fluid Mechanics Technische Universitat Munchen Boltzmannstr. 15, 85748 Garching bei Munchen, Germany

Muzio Grilli
Lehrstuhl fur Aerodynamik und Stromungsmechanik Technische Universitat Munchen Boltzmannstr 15, D-85748 Garching, Germany

Stefan Hickel
Institute of Aerodynamics and Fluid Mechanics Technische Universitat Munchen Boltzmannstr. 15, 85748 Garching bei Munchen, Germany; Chair of Computational Aerodynamics Faculty of Aerospace Engineering, TU Delft Kluyverweg 1, 2629 HS Delft, Netherlands

Résumé

We investigate a passive flow-control technique for the interaction of an oblique shock generated by an 8.8° wedge with a turbulent boundary layer at a free-stream Mach number of M = 2.3 by means of large-eddy simulation. The control configuration studied combines suction applied inside the separation zone and injection acting upstream of the interaction region through a passive-channel concept. We present results for three configurations, which differ in the suction location within the recirculation zone while the injection position is kept constant. Besides the analysis of mean flow properties, the main focus lies on the turbulence evolution within the interaction region and the effect of the control devices on the low-frequency dynamics of the reflected shock movement.