Investigation of Laser Generated Perturbations for Boundary Layer Stability Experiments

  • Dirk Heitmann
  • Christian Kähler
  • Rolf Radespiel
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 112)


This paper describes boundary layer stability experiments with controlled perturbations at hypersonic flow around a flat plate. Laser pulses are used to generate pressure and temperature disturbances. By using multiple laser pulses a wave packet with adjustable amplitude and frequency can be created. The development of such artificial waves is measured with high frequency pressure sensors. The possibility to generate and excite second mode instability waves with this setup is demonstrated.


Boundary Layer Shock Wave Instability Wave Time Trace Boundary Layer Transition 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Dirk Heitmann
    • 1
  • Christian Kähler
    • 2
  • Rolf Radespiel
    • 1
  1. 1.Institut für StrömungsmechanikTechnische Universität BraunschweigBraunschweigGermany
  2. 2.Institut für Strömungsmechanik und AerodynamikUniversität der Bundeswehr MünchenNeubibergGermany

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