2006/06/14 by Nicholas T. Ouellette, Haitao Xu, Mickaël Bourgoin +1 · 2 citations
Engineering · Environmental Science · #Fluid Dynamics and Turbulent Flows #Wind and Air Flow Studies #Particle Dynamics in Fluid Flows
paper · pdf · doi:10.1088/1367-2630/8/6/102
openalex publication_date 2006/06/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
We 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 C 0 , 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 C 0 with the turbulence level is also investigated, and found to be in agreement with an existing model.