81 citations · 216 across the 11 of their papers we have counts for
11 papers
Correlated collisions and history filtering: unraveling and reproducing the statistics of coalescing particles in turbulence from the ghost-particle framework
Fanxi Gong, Ewe-Wei Saw
This is the first in a series of papers aimed at understanding the statistics of coalescing particles in turbulent flow and their relation to collisionless ghost particles. We perf…
The effect of collision-coagulation on the mean relative velocity of particles in turbulent flow: systematic results and validation of model
Xiaohui Meng, Ewe-Wei Saw
The mean radial component of relative velocity (MRV) between pairs of inertial particles is studied, where the particles are advected by turbulent flow and undergo collision-and-co…
Sharp depletion of radial distribution function of particles due to collision and coagulation inside turbulent flow
Xiaohui Meng, Ewe-Wei Saw
We perform direct numerical simulation (DNS) to study the clustering of small, heavy, monodisperse particles subject to collision-coagulation in turbulent flow (i.e., colliding par…
On the investigation of properties of superfluid He turbulence using a hot-wire signal
P. Diribarne, M. Bon-Mardion, A. Girard +17
We report hot-wire measurements performed in two very different, co- and counter-rotating flows, in normal and superfluid helium at 1.6 K, 2 K, and 2.3 K. As recently reported, the…
Intricate Relations Among Particle Collision, Relative Motion and Clustering in Turbulent Clouds: Computational Observation and Theory
Ewe-Wei Saw, Xiaohui Meng
Considering turbulent clouds containing small inertial particles, we investigate the effect of particle collision, in particular collision-coagulation, on particle clustering and p…
Universality and Thermodynamics of Turbulence
Damien Geneste, Hugues Faller, Florian Nguyen +5
We investigate universality of the Eulerian velocity structure functions using velocity fields obtained from the stereoscopic particle image velocimetry (SPIV) technique in experim…
New criteria to detect singularities in experimental incompressible flows
Denis Kuzzay, Ewe-Wei Saw, Fabio J. W. A. Martins +4
We introduce two new singularity detection criteria based on the work of Duchon-Robert (DR) [J. Duchon and R. Robert, Nonlinearity, 13, 249 (2000)], and Eyink [G.L. Eyink, Phys. Re…
Abrupt growth of large aggregates by correlated coalescences in turbulent flow
Jeremie Bec, Samriddhi Sankar Ray, Ewe Wei Saw +1
Smoluchowski's coagulation kinetics is here shown to fail when the coalescing species are dilute and transported by a turbulent flow. The intermittent Lagrangian motion involves co…
Turbulence attenuation by large neutrally buoyant particles
Mamadou Cisse, Ewe Wei Saw, Mathieu Gibert +2
Turbulence modulation by inertial-range-size, neutrally-buoyant particles is investigated experimentally in a von Kármán flow. Increasing the particle volume fraction $Φ_\mathrm{v}…
Extreme fluctuations of the relative velocities between droplets in turbulent airflow
Ewe-Wei Saw, Gregory P. Bewley, Eberhard Bodenschatz +2
We compare experiments and direct numerical simulations to evaluate the accuracy of the Stokes-drag model, which is used widely in studies of inertial particles in turbulence. We f…
Observation of the sling effect
Gregory P. Bewley, Ewe Wei Saw, Eberhard Bodenschatz
When cloud particles are small enough, they move with the turbulent air in the cloud. On the other hand, as particles become larger their inertia affects their motions, and they mo…