Direct Numerical Study of Crossflow Instability

  • P. R. Spalart
Part of the International Union of Theoretical and Applied Mechanics book series (IUTAM)


Disturbances in the swept Hiemenz flow are calculated by solving the Navier-Stokes equations. The spatially-evolving base flow is treated exactly, allowing a check of the “local” stability theories. Different types of disturbances such as random noise, waves, and wave packets, are input near the attachment line, develop in space, and exit through an outflow boundary. They all generate streamwise vortices. The effect of the Reynolds number, of the time-dependence of the noise, and of nonlinearity, are investigated.


Wave Packet Streamwise Vortex Curvature Term Asymptotic Regime Attachment Line 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • P. R. Spalart
    • 1
  1. 1.Mail Stop 202A-1NASA Ames Research CenterMoffett FieldUSA

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