期刊
PHYSICAL REVIEW LETTERS
卷 112, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.104501
关键词
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资金
- Australian Research Council's Discovery Projects funding scheme [DP110101525]
- Australian Research Council's Discovery Early Career Research Award [DE120100364]
- Australian Research Council [DE120100364] Funding Source: Australian Research Council
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.
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