Deformation and Splitting of Pseudo-elliptical Vortex Rings

  • M. Kiya
  • H. Ishii


A vortex-dynamics simulation has been made on the deformation of a pseudo-elliptical vortex ring which consists of two parallel line segments connected by two semicircles of the same radius, the major-to-minor axis ratio being between 2 and 20. The deformation has four fundamental patterns depending on the aspect ratio: the periodic axis switching; the splitting into two vortex rings after the axis switching; the splitting into two vortex rings without the axis switching; the splitting into three vortex rings without the axis switching.


Aspect Ratio Vortex Ring Axis Ratio Core Radius Vorticity Field 
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Copyright information

© Springer-Verlag Berlin, Heidelberg 1991

Authors and Affiliations

  • M. Kiya
    • 1
  • H. Ishii
    • 1
  1. 1.Department of Mechanical EngineeringHokkadido UniversitySapporo, 060Japan

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