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Role of the recirculation bubble dynamics on the unsteadiness of the Shock Wave Boundary Layer Interaction

Résumé

The aim of the present work is to contribute to a better understanding of the physical mechanism causing the low frequency oscillations of the Shock Wave Boundary-Layer Interaction (SWBLI) by analyzing data from highly resolved unsteady numerical simulations. Results show that the low frequency reflected shock-wave motion is mainly driven by the low frequency breathing of the separation bubble that comes from a modulation of the successive enlargements and shrinkages of the separated zone (medium frequency flapping of the shear-layer); the oscillations of the reflected shocks foot being in phase with the motion of the separation point.
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Dates et versions

hal-03326319 , version 1 (25-08-2021)

Identifiants

  • HAL Id : hal-03326319 , version 1

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Ismaïl Ben Hassan Saïdï, Christian Tenaud, Guillaume Fournier. Role of the recirculation bubble dynamics on the unsteadiness of the Shock Wave Boundary Layer Interaction. 25th ICTAM, Aug 2021, Milano (virtual), Italy. ⟨hal-03326319⟩
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