Particle-laden turbulence: progress and perspectives

L Brandt, F Coletti - Annual Review of Fluid Mechanics, 2022 - annualreviews.org
This review is motivated by the fast progress in our understanding of the physics of particle-
laden turbulence in the last decade, partly due to the tremendous advances of measurement …

Statistical models for the dynamics of heavy particles in turbulence

J Bec, K Gustavsson, B Mehlig - Annual Review of Fluid …, 2024 - annualreviews.org
When very small particles are suspended in a fluid in motion, they tend to follow the flow.
How such tracer particles are mixed, transported, and dispersed by turbulent flow has been …

The effect of Reynolds number on inertial particle dynamics in isotropic turbulence. Part 1. Simulations without gravitational effects

PJ Ireland, AD Bragg, LR Collins - Journal of Fluid Mechanics, 2016 - cambridge.org
In this study, we analyse the statistics of both individual inertial particles and inertial particle
pairs in direct numerical simulations of homogeneous isotropic turbulence in the absence of …

Coherent clusters of inertial particles in homogeneous turbulence

L Baker, A Frankel, A Mani, F Coletti - Journal of Fluid Mechanics, 2017 - cambridge.org
Despite the widely acknowledged significance of turbulence-driven clustering, a clear
topological definition of particle cluster in turbulent dispersed multiphase flows has been …

Turbophoresis of small inertial particles: theoretical considerations and application to wall-modelled large-eddy simulations

PL Johnson, M Bassenne, P Moin - Journal of Fluid Mechanics, 2020 - cambridge.org
In wall-bounded turbulent flows, the wall-normal gradient in turbulence intensity causes
inertial particles to move preferentially toward the wall, leading to elevated concentration …

Multiscale preferential swee** of particles settling in turbulence

J Tom, AD Bragg - Journal of Fluid Mechanics, 2019 - cambridge.org
In a seminal article, Maxey (J. Fluid Mech., vol. 174, 1987, pp. 441–465) presented a
theoretical analysis showing that enhanced particle settling speeds in turbulence occur …

Snowflakes in the atmospheric surface layer: observation of particle–turbulence dynamics

A Nemes, T Dasari, J Hong, M Guala… - Journal of Fluid …, 2017 - cambridge.org
We report on optical field measurements of snow settling in atmospheric turbulence at based
on the Kolmogorov time scale. The still-air terminal velocities estimated for the resulting …

Dynamics of small heavy particles in homogeneous turbulence: a Lagrangian experimental study

T Berk, F Coletti - Journal of Fluid Mechanics, 2021 - cambridge.org
We investigate the behaviour of microscopic heavy particles settling in homogeneous air
turbulence. The regimes are relevant to the airborne transport of dust and droplets: the …

Microbubbles and microparticles are not faithful tracers of turbulent acceleration

V Mathai, E Calzavarini, J Brons, C Sun, D Lohse - Physical review letters, 2016 - APS
We report on the Lagrangian statistics of acceleration of small (sub-Kolmogorov) bubbles
and tracer particles with Stokes number St≪ 1 in turbulent flow. At a decreasing Reynolds …

Near-wake structure of full-scale vertical-axis wind turbines

NJ Wei, ID Brownstein, JL Cardona… - Journal of Fluid …, 2021 - cambridge.org
To design and optimize arrays of vertical-axis wind turbines (VAWTs) for maximal power
density and minimal wake losses, a careful consideration of the inherently three …