IDENTIFICATION OF EFFICIENT FLOW CONTROL STRATEGIES FOR TRUCK MODEL DRAG REDUCTION - Université Claude Bernard Lyon 1 Accéder directement au contenu
Communication Dans Un Congrès Année : 2019

IDENTIFICATION OF EFFICIENT FLOW CONTROL STRATEGIES FOR TRUCK MODEL DRAG REDUCTION

Résumé

This study presents the modifications produced in the controlled wake of a square-back blunt truck model using unsteady pulsed jets combined with small flaps, and the corresponding mean base pressure changes. Different control strategies obtained using different locations of the pulsed jets around the model base are considered. A base pressure increase is obtained for a variety of control strategies implying one to four edges used in a synchronized manner. The vertically-asymmetric forcing excluding the bottom edge results in 33% increase of the mean base pressure and 28% reduction of the wake length with a reduced energetic cost with respect to the forcing strategy involving the four model edges. This control strategy also proves to be efficient in yawed configurations (5 °).
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Dates et versions

hal-02405203 , version 1 (11-12-2019)

Identifiants

  • HAL Id : hal-02405203 , version 1

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Patricia Sujar-Garrido, Marc Michard, Thomas Castelain, Yann Haffner. IDENTIFICATION OF EFFICIENT FLOW CONTROL STRATEGIES FOR TRUCK MODEL DRAG REDUCTION. 11th International Symposium on Turbulence and Shear Flow Phenomena (TSFP11), Jul 2019, Southampton, United Kingdom. ⟨hal-02405203⟩
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