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Evolution of Geometric Structures in Intense Turbulence

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Xu,  Haitao
Laboratory for Fluid Dynamics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Ouellette,  Nicholas T.
Laboratory for Fluid Dynamics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Bodenschatz,  Eberhard
Laboratory for Fluid Dynamics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Xu, H., Ouellette, N. T., & Bodenschatz, E. (2008). Evolution of Geometric Structures in Intense Turbulence. New Journal of Physics, 10, 013012-1-013012-9. doi:10.1088/1367-2630/10/1/013012.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0029-13B9-6
Abstract
We report measurements of the evolution of lines, planes and volumes in an intensely turbulent laboratory flow using high-speed particle tracking. We find that the classical characteristic timescale of an eddy at the initial scale of the object considered is the natural timescale for the subsequent evolution. The initial separation may only be neglected if this timescale is much smaller than the largest turbulence timescale, implying extremely high turbulence levels.