Influence of Pressure Gradient on the Nonlocalized Receptivity of Boundary Layers

  • J. D. Crouch
Part of the International Union of Theoretical and Applied Mechanics book series (IUTAM)


The nonlocalized receptivity of Falkner-Skan boundary layers is analyzed. An acoustic disturbance in the free stream interacts with a surface-generated disturbance to excite the natural boundary-layer instabilities. Results for the streamwise evolution of disturbances are presented along with receptivity amplitudes. The results show that favorable pressure gradients give rise to slightly larger receptivity amplitudes, over a narrower band of surface wave numbers. Conversely, adverse pressure gradients produce slightly smaller receptivity amplitudes, over a broader band of surface wave numbers.


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Copyright information

© Springer-Verlag, Berlin Heidelberg 1994

Authors and Affiliations

  • J. D. Crouch
    • 1
  1. 1.Boeing Commercial Airplane GroupSeattleUSA

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