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New Aspects of Vortex Dynamics Relevant to Coherent Structures in Turbulent Flows

  • W. Schoppa
  • F. Hussain
Part of the International Centre for Mechanical Sciences book series (CISM, volume 353)

Abstract

Vortex dynamics offers a tractable avenue for explaining the dynamics of coherent structures, which appear to be the dominant features of turbulent shear flows and are the key to predicting and controlling turbulence phenomena such as mixing, entrainment, chemical reaction, drag, and aerodynamic noise. With this in mind, a series of investigations have been undertaken in our group; herein we provide a summary of these studies to date. In particular, we survey coherent structure eduction in free and wall-bounded shear flows, our new generic definition of a vortex, incompressible and compressible vortex reconnection, internal core dynamics within vortices, core dynamics-induced mixing layer transition, helical wave decomposition to extract polarized vorticity wavepackets from turbulent flows, and dynamical coupling of coherent structures with fine-scale turbulence. In addition to reviewing specific contributions in these topics, the results are discussed in context of their generic relevance to turbulence physics.

Keywords

Vortex Ring Vortex Core Vortex Tube Meridional Flow Core Dynamic 
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 Wien 1996

Authors and Affiliations

  • W. Schoppa
    • 1
  • F. Hussain
    • 1
  1. 1.University of HoustonHoustonUSA

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