Anisotropic particles in turbulence

GA Voth, A Soldati - Annual Review of Fluid Mechanics, 2017 - annualreviews.org
Anisotropic particles are common in many industrial and natural turbulent flows. When these
particles are small and neutrally buoyant, they follow Lagrangian trajectories while …

Statistical models for spatial patterns of heavy particles in turbulence

K Gustavsson, B Mehlig - Advances in Physics, 2016 - Taylor & Francis
The dynamics of heavy particles suspended in turbulent flows is of fundamental importance
for a wide range of questions in astrophysics, atmospheric physics, oceanography, and …

Rotation of nonspherical particles in turbulent channel flow

L Zhao, NR Challabotla, HI Andersson, EA Variano - Physical review letters, 2015 - APS
The effects of particle inertia, particle shape, and fluid shear on particle rotation are
examined using direct numerical simulation of turbulent channel flow. Particles at the …

Full rotational dynamics of plastic microfibers in turbulence

V Giurgiu, GCA Caridi, M De Paoli, A Soldati - Physical review letters, 2024 - APS
The motion, settling, and dispersion of microplastics in the ocean are determined by their
rotational dynamics. We present experiments on elongated, large aspect ratio, and mildly …

Shape-dependence of particle rotation in isotropic turbulence

M Byron, J Einarsson, K Gustavsson, G Voth… - Physics of …, 2015 - pubs.aip.org
We consider the rotation of neutrally buoyant axisymmetric particles suspended in isotropic
turbulence. Using laboratory experiments as well as numerical and analytical calculations …

Transport of anisotropic particles under waves

MH DiBenedetto, NT Ouellette… - Journal of Fluid …, 2018 - cambridge.org
Using a numerical model, we analyse the effects of shape on both the orientation and
transport of anisotropic particles in wavy flows. The particles are idealized as prolate and …

High-speed particle rotation for coating oil removal by hydrocyclone

Y Huang, J Li, Y Zhang, H Wang - Separation and Purification Technology, 2017 - Elsevier
Hydrocyclone not only achieves centrifugal separation of solids and liquids but also purifies
oil-coated particles through rotational shear flow, resulting in high-speed particle rotation …

Alignment of vorticity and rods with Lagrangian fluid stretching in turbulence

R Ni, NT Ouellette, GA Voth - Journal of Fluid Mechanics, 2014 - cambridge.org
Stretching in continuum mechanics is naturally described using the Cauchy–Green strain
tensors. These tensors quantify the Lagrangian stretching experienced by a material …

Orientation and rotation of inertial disk particles in wall turbulence

NR Challabotla, L Zhao, HI Andersson - Journal of Fluid Mechanics, 2015 - cambridge.org
The translational and rotational dynamics of oblate spheroidal particles suspended in a
directly simulated turbulent channel flow have been examined. Inertial disk-like particles …

Orientation statistics and settling velocity of ellipsoids in decaying turbulence

C Siewert, RPJ Kunnen, M Meinke, W Schröder - Atmospheric research, 2014 - Elsevier
Motivated by applications in technology as well as in other disciplines where the motion of
particles in a turbulent flow field is important, the orientation and settling velocity of …