Taylor particle dispersion during transition to fully developed two-dimensional turbulence

Abstract

We report new measurements of single particle dispersion in turbulent two-dimensional (2D) flows. Laboratory experiments in electromagnetically driven and Faraday wave driven turbulence reveal a transition from weakly dispersing superdiffusive regime to strongly dispersing Brownian diffusion as the flow energy is increased in a broad range. The transition to fully developed 2D turbulence is characterized by the topological changes in the fluid particle trajectories and the development of self-similar diffusion. The degree of 2D turbulence development can be quantified by a parameter describing the deviation of single particle dispersion from the Taylor dispersion.

5 pages, 4 figures

References in corpus (4)

• Advances in Search and Rescue at Sea
• Inverse energy cascade and emergence of large coherent vortices in turbulence driven by Faraday waves
• Turbulence-condensate interaction in two dimensions
• Turbulence damping as a measure of the flow dimensionality

Cited by in corpus (3)

• Three-dimensional fluid motion in Faraday waves: creation of vorticity and generation of two-dimensional turbulence
• Taylor dispersion in two-dimensional bacterial turbulence
• Anomalous diffusion in a randomly modulated velocity field