Delayed Detached-Eddy Simulation of the Transonic Flow around a Supercritical Airfoil in the Buffet Regime

  • F. Grossi
  • M. Braza
  • Y. Hoarau
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 117)


In the present paper a Delayed Detached-Eddy Simulation (DDES) based on the strain-adaptive linear Spalart-Allmaras (SALSA) model is performed in order to investigate the transonic flow over the OAT15A supercritical airfoil within the buffet regime. The results are compared with 2D and 3D-URANS computations using the SALSA model, as well as with experimental data. This study shows improvements achieved in the prediction of the flow unsteadiness and statistics by means of the DDES.


Transonic Flow AIAA Journal RANS Model Shock Motion Shear Stress Transport Model 
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© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Institut de Mécanique des Fluides de Toulouse - UMR 5502ToulouseFrance
  2. 2.Institut de Mécanique des Fluides et des Solides de StrasbourgStrasbourgFrance

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