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Spatial Direct Numerical Simulation of Transition Phenomena in Supersonic Flat-Plate Boundary Layers

  • Axel Fezer
  • Markus Kloker
Conference paper
Part of the IUTAM Symposia book series (IUTAM)

Abstract

Direct Numerical Simulations (DNS) are carried out for flat-plate boundary layers at Ma = 2.0 and 6.8 to investigate subharmonic combination-mode phenomena caused by the interaction of two three-dimensional disturbance waves with fundamental and subharmonic frequency. An unexpected long growth of the nonlinearly generated subharmonic combination mode is observed which is independent of the disturbance amplitudes. The relevance of the subharmonic modes for transition is examined by comparison with a pure oblique-type breakdown scenario.

Keywords

Direct Numerical Simulation Combination Mode Subharmonic Resonance Amplification Rate Disturbance Amplitude 
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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Axel Fezer
    • 1
  • Markus Kloker
    • 1
  1. 1.Institut für Aerodynamik und GasdynamikUniversität StuttgartStuttgartGermany

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