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Optimal location of a synthetic jet on an airfoil for stall control

Abstract : This study deals with the optimization of the location of a synthetic jet on the suction side of an airfoil to control stall. The optimal location is found by coupling a time-accurate flow solver with adaptive mesh refinement/coarsening techniques and an automatic optimization algorithm. The flow and jet are modeled by the unsteady Reynolds-averaged Navier-Stokes equations (URANSE) with a near-wall low-Reynolds number turbulence closure. An unstructured grid refinement/coarsening method is used to automatically generate meshes adapted to the presence of the synthetic jet at a prescribed location. An optimization algorithm modifies the location of the synthetic jet to determine the best actuator location to increase the time-averaged lift for high angles of attack. The proposed methodology is applied to optimize the location of a synthetic jet on the suction side of the NACA 0012 airfoil at a Reynolds number Re=2×106 and incidences of 18deg and 20deg⁠. Finally, a physical analysis of the influence of the synthetic jet location on the control efficiency is proposed to provide some guidelines for practical jet positioning.
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https://hal.inria.fr/hal-01730800
Contributor : Régis Duvigneau Connect in order to contact the contributor
Submitted on : Monday, January 24, 2022 - 7:07:19 PM
Last modification on : Sunday, May 1, 2022 - 3:15:52 AM
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Régis Duvigneau, Alexander Hay, Michel Visonneau. Optimal location of a synthetic jet on an airfoil for stall control. Journal of Fluids Engineering, American Society of Mechanical Engineers, 2007, 129 (7), ⟨10.1115/1.2742729⟩. ⟨hal-01730800⟩

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