Near-wall motion of inertial particles in a drag-reduced non-Newtonian turbulent flow
Sign Up to like & getrecommendations! Published in 2019 at "Experiments in Fluids"
DOI: 10.1007/s00348-019-2764-8
Abstract: The kinematics of inertial particles suspended in the near-wall region of Newtonian and non-Newtonian turbulent channel flows was experimentally investigated. The non-Newtonian fluid was a homogeneous solution of 90 part per million of a polyacrylamide… read more here.
Keywords: inertial particles; near wall; water; non newtonian ... See more keywords
Coherent clusters of inertial particles in homogeneous turbulence
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2017.700
Abstract: Despite the widely acknowledged significance of turbulence-driven clustering, a clear topological definition of particle cluster in turbulent dispersed multiphase flows has been lacking. Here we introduce a definition of coherent cluster based on self-similarity, and… read more here.
Keywords: coherent clusters; turbulence; clusters inertial; inertial particles ... See more keywords
Two mechanisms of modulation of very-large-scale motions by inertial particles in open channel flow
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.210
Abstract: Very-large-scale motions (VLSMs) and large-scale motions (LSMs) coexist at moderate Reynolds numbers in a very long open channel flow. Direct numerical simulations two-way coupled with inertial particles are analysed using spectral information to investigate the… read more here.
Keywords: large scale; scale motions; open channel; inertial particles ... See more keywords
Turbophoresis of small inertial particles: theoretical considerations and application to wall-modelled large-eddy simulations
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.865
Abstract: 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 levels in the viscous sublayer. At first glance, wall-modelled large-eddy simulations may… read more here.
Keywords: large eddy; eddy simulations; modelled large; wall modelled ... See more keywords
Interface-resolved simulations of small inertial particles in turbulent channel flow
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.918
Abstract: We present a direct comparison between interface-resolved and one-way-coupled point-particle direct numerical simulations (DNS) of gravity-free turbulent channel flow laden with small inertial particles, with high particle-to-fluid density ratio and diameter of approximately three viscous… read more here.
Keywords: interface resolved; turbulent channel; inertial particles; small inertial ... See more keywords
Aerodynamic generation of electric fields in turbulence laden with charged inertial particles
Sign Up to like & getrecommendations! Published in 2018 at "Nature Communications"
DOI: 10.1038/s41467-018-03958-7
Abstract: Self-induced electricity, including lightning, is often observed in dusty atmospheres. However, the physical mechanisms leading to this phenomenon remain elusive as they are remarkably challenging to determine due to the high complexity of the multi-phase… read more here.
Keywords: electric fields; turbulence laden; charged inertial; turbulence ... See more keywords
Impact of subgrid fluid turbulence on inertial particles subject to gravity
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Turbulence"
DOI: 10.1080/14685248.2017.1317099
Abstract: ABSTRACT Two-phase turbulent flows with the dispersed phase in the form of small, spherical particles are increasingly often computed with the large-eddy simulation (LES) of the carrier fluid phase, coupled to the Lagrangian tracking of… read more here.
Keywords: particles subject; impact; turbulence; inertial particles ... See more keywords
Dynamical regimes and clustering of small neutrally buoyant inertial particles in stably stratified turbulence
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review Fluids"
DOI: 10.1103/physrevfluids.8.054501
Abstract: Inertial particles in stably stratified flows play a fundamental role in geophysics, from the dynamics of nutrients in the ocean to the dispersion of pollutants in the atmosphere. We consider the Maxey-Riley equation for small… read more here.
Keywords: particles stably; buoyant inertial; inertial particles; stably stratified ... See more keywords
Suspension of large inertial particles in a turbulent swirling flow
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DOI: 10.1103/physrevfluids.8.064301
Abstract: We present experimental observations of the spatial distribution of large inertial particles suspended in a turbulent swirling flow at high Reynolds number. The plastic particles, which are tracked using several high speed cameras, are heavier… read more here.
Keywords: swirling flow; inertial particles; suspension large; turbulent swirling ... See more keywords
Backward Finite-Time Lyapunov Exponents in Inertial Flows
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DOI: 10.1109/tvcg.2016.2599016
Abstract: Inertial particles are finite-sized objects that are carried by fluid flows and in contrast to massless tracer particles they are subject to inertia effects. In unsteady flows, the dynamics of tracer particles have been extensively… read more here.
Keywords: time lyapunov; finite time; tracer particles; inertial particles ... See more keywords