Nicholas T Ouellette et al 2006 New J. Phys. 8 102 doi:10.1088/1367-2630/8/6/102
Small-scale anisotropy in Lagrangian turbulence
Nicholas T Ouellette1,4, Haitao Xu1,2, Mickaël Bourgoin3 and Eberhard Bodenschatz1,2
Show affiliationsWe report measurements of the second-order Lagrangian structure function and the Lagrangian velocity spectrum in an intensely turbulent laboratory flow. We find that the asymmetries of the large-scale flow are reflected in the small-scale statistics. In addition, we present new measurements of the Lagrangian structure function scaling constant C0, which is of central importance to stochastic turbulence models as well as to the understanding of turbulent pair dispersion and scalar mixing. The scaling of C0 with the turbulence level is also investigated, and found to be in agreement with an existing model.
- PACS
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47.80.Cb Velocity measurements
- Subjects
- Dates
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Issue 6 (June 2006)
Received 17 January 2006
Published 14 June 2006
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Small-scale anisotropy in Lagrangian turbulence
Nicholas T Ouellette et al 2006 New J. Phys. 8 102
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