Viscous-Inviscid Strategy and Computation of Transonic Buffet

  • J. C. Le Balleur
  • P. Girodroux-Lavigne
Conference paper
Part of the International Union of Theoretical and Applied Mechanics book series (IUTAM)


After summarizing the viscous-inviscid strategy, the progress in non-boundary-layer formulations and in numerical coupling techniques, an interacting time-dependent thin-layer method is presented, and shown capable of computing time-consistently the transonic buffet over airfoils. The method approximates the Defect Formulation theory with a modelling of the instantaneous viscous velocity profiles, and fully recovers the viscous upstream influence from a time-consistent viscous-inviscid coupling, converged at each time-step. Results are shown both for a supercritical and an NACA0012 airfoil. The computed buffet-onset, and buffet time-evolutions, are compared with available experiments versus incidence and Mach number.


Mach Number Separate Flow Viscous Layer NACA0012 Airfoil Prandtl Equation 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1989

Authors and Affiliations

  • J. C. Le Balleur
    • 1
  • P. Girodroux-Lavigne
    • 1
  1. 1.ONERAChatillon CedexFrance

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