Zonal-Detached Eddy Simulation of Transonic Buffet on a Civil Aircraft Type Configuration

  • V. Brunet
  • S. Deck
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 97)


This paper presents a transonic buffet simulation on a half wing/body rigid model at a realistic Reynolds number. The modelling approach retained is a Zonal-DES approach which allows attached boundary layers to be protected and a rapid switching into LES mode in the separated areas. Transonic buffet phenomenon is a challenging case for DES type simulations since the separation point is unstable during time and the separation remains closed to the skin of the model. The simulation was performed on an adapted mesh and comparisons with experiments are carried out. It is shown that the mean field is accurately predicted with ZDES while the present RANS calculations failed to reproduce this shape of the separated area. The results also provide an insight into the unsteady nature of the flow.


Large Eddy Simulation AIAA Paper Shock Location RANS Simulation Thick Boundary Layer 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • V. Brunet
    • 1
  • S. Deck
    • 1
  1. 1.ONERAFrance

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