210 citations · 1.1k across the 26 of their papers we have counts for
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Determining the Onset of Hydrodynamic Erosion in Turbulent Flow
J. C. Salevan, Abram H. Clark, Mark D. Shattuck +2
We revisit the longstanding question of the onset of sediment transport driven by a turbulent fluid flow via laboratory measurements. We use particle tracking velocimetry to quanti…
Measurements of the coupling between the tumbling of rods and the velocity gradient tensor in turbulence
Rui Ni, Stefan Kramel, Nicholas T. Ouellette +1
We present simultaneous experimental measurements of the dynamics of anisotropic particles transported by a turbulent flow and the velocity gradient tensor of the flow surrounding…
Alignment of vorticity and rods with Lagrangian fluid stretching in turbulence
Rui Ni, Nicholas T. Ouellette, Greg A. Voth
Stretching in continuum mechanics is naturally described using the Cauchy-Green strain tensors. These tensors quantify the Lagrangian stretching experienced by a material element,…
Visualization of Kelvin waves on quantum vortices
Enrico Fonda, David P. Meichle, Nicholas T. Ouellette +3
In superfluid helium, vorticity is quantized and constrained on line-like phase singularities, called quantum or quantized vortices. By visualizing the motion of sub-micron frozen…
Direct multi-scale reconstruction of velocity fields from measurements of particle tracks
Douglas H. Kelley, Nicholas T. Ouellette
We present a method for reconstructing two-dimensional velocity fields at specified length scales using observational data from tracer particles in a flow, without the need for int…
Experimental measurement of acceleration correlations and pressure structure functions in high Reynolds number turbulence
Haitao Xu, Nicholas T. Ouellette, Dario Vincenzi +1
We present measurements of fluid particle accelerations in turbulent water flows between counter-rotating disks using three-dimensional Lagrangian particle tracking. By simultaneou…