Abstract
Understanding the formation and of dynamics of filamentary vortices with intense vorticity in turbulent flows is of great fundamental interest. Most of the energy transfer towards dissipation occurs through these structures and their breakdown. It has been shown numerically by Siggia [1] that the regions of largest vorticity concertration in a turbulent flow look like filaments. Experimentally filaments have been observerd by Couder et al. [2] in a turbulent flow in a cylinder between two counter-rotating stirrers. They observed filaments corresponding to low pressure regions. They are generated by local stretching of the vorticity sheets [3].KeywordsLaminar Boundary LayerVortex BreakdownAdvection VelocityElliptical FormInitial VorticityThese 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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