An experimental study of turbulent relative dispersion models

Ouellette, Nicholas T.; Xu, Haitao; Bourgoin, Mickael; Bodenschatz, Eberhard

doi:doi:10.1088/1367-2630/8/6/109

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An experimental study of turbulent relative dispersion models

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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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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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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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Zitation

Ouellette, N. T., Xu, H., Bourgoin, M., & Bodenschatz, E. (2006). An experimental study of turbulent relative dispersion models. New Journal of Physics, 85, 109-1-109-23. doi:doi:10.1088/1367-2630/8/6/109.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0029-14D3-6

Zusammenfassung

We report measurements of the spreading rate of pairs of tracer particles in an intensely turbulent laboratory water flow. We compare our measurements of this turbulent relative dispersion with the longstanding work of Richardson and Batchelor, and find excellent agreement with Batchelor's predictions. The distance neighbour function, the probability density function of the relative dispersion, is measured and compared with existing models. We also investigate the recently proposed exit time analysis of relative dispersion.