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High-order velocity structure functions in turbulent shear flows
Measurements are presented of the velocity structure function on the axis of a turbulent jet at Reynolds numbers Rλ ≤ 852 and in a turbulent duct flow at Rλ = 515. Moments of the structure function
Turbulence and waves in a rotating tank
A turbulent field is produced with an oscillating grid in a deep, rotating tank. Near the grid, the Rossby number is kept large, 0(3-33), and the turbulence is locally unaffected by rotation. Away
Turbulent transport of material particles: an experimental study of finite size effects.
Experimental Lagrangian statistics of finite sized, neutrally bouyant, particles transported in an isotropic turbulent flow are presented and Finite size effects are shown not to be trivially related to velocity intermittency.
Acceleration statistics of inertial particles in turbulent flow
Turbulent transport of material inclusions plays an important role in many natural and industrial situations. Being able to accurately model and predict the dynamics of dispersed particles
Structure functions in turbulence, in various flow configurations, at Reynolds number between 30 and 5000, using extended self-similarity
A summary of experimental results on structure functions obtained using extended self-similarity in various flow configurations (jet, grid, mixing layer, duct flow, cylinder) at Reynolds numbers
Arbitrary-order Hilbert spectral analysis for time series possessing scaling statistics: comparison study with detrended fluctuation analysis and wavelet leaders.
An extended version of Hilbert-Huang transform, namely arbitrary-order Hilbert spectral analysis, is presented to characterize the scale-invariant properties of a time series directly in an amplitude-frequency space and it seems that Hilbert and DFA methods provide better singularity spectra than SF and WL.
Second-order structure function in fully developed turbulence.
An analysis of passive scalar (temperature) turbulence time series is presented to show the influence of large-scale structures in real turbulence and the efficiency of the Hilbert-based methodology, and corresponding scaling exponents ζ(θ)(q) provided by the Hilbert -based approach indicate that the Passive scalar turbulence field may be less intermittent than what was previously believed.
Intermittency and Reynolds number
Hot wire measurements of longitudinal and transverse increments are performed in three different types of flows on a large range of Reynolds numbers (100≲Rλ≲3000). An improved technique based on