A Vortex Ring Interacting with a Vortex Filament and its Deformation Near the Two-Dimensional Stagnation Point

  • M. Kiya
  • T. Sato
Conference paper
Part of the Lecture Notes in Engineering book series (LNENG, volume 24)


In this paper the interaction between vortex filaments and vortex rings and the deformation of vortex rings near the two-dimensional stagnation point are simulated by a three-dimensional vortex method (Shirayama etal. 1985, Leonard 1985). The two problems are respectively concerned with the effect of free-stream turbulence on turbulent plane mixing layers (Pui & Gartshore 1979) and the production of turbulence by the vortex stretching near saddles associated with large-scale coherent structures(Cantwell & Coles 1983, Kiya & Matsumura 1985). We assume that the first step to understand the free-stream turbulence effects is to study the interaction between a vortex ring and a vortex filament and that the process of deformation of a vortex ring gives us a clue to understand physical processes occurring near the saddles.


Vortex Ring Exchange Mode Circumferential Velocity Vortex Filament Viscous Diffusion 
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Copyright information

© Springer-Verlag Berlin, Heidelberg 1986

Authors and Affiliations

  • M. Kiya
    • 1
  • T. Sato
    • 1
  1. 1.Department of Mechanical Engineering, Faculty of EngineeringHokkaido UniversitySapporo, 060Japan

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