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Three-Dimensional Numerical Simulation of Laminar Turbulent Transition and its Control by Periodic Disturbances

  • L. Kleiser
  • E. Laurien
Part of the International Union of Theoretical and Applied Mechanics book series (IUTAM)

Abstract

The laminar-turbulent transition process in plane Poiseuille flow is simulated by numerical integration of the three-dimensional time-dependent Navier-Stokes equations using a spectral method. The classical peak-valley splitting mode of secondary instability is considered. Detailed comparison with experiments has demonstrated very satisfactory agreement up to the 1-spike stage. Visualizations of the development of three-dimensional flow structures are presented including timelines of fluid markers. It is found that the A vortex structure appearing in flow visualizations does not consist of a vortex tube as the usual interpretation of the vortex loop concept suggests. A numerical study of transition control by superposition of purely two-dimensional waves shows that efficient control is possible at an early stage of the transition process but fails once significant three-dimensional disturbances are present.

Keywords

Vortex Line Vortex Tube Secondary Instability Springer Lecture Note Boundary Layer Transition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag, Berlin, Heidelberg 1985

Authors and Affiliations

  • L. Kleiser
    • 1
  • E. Laurien
    • 1
  1. 1.Institute for Theoretical Fluid MechanicsDFVLRGöttingenGermany

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