Abstract Space plasmas can be described as conducting flows in a turbulent state, where
fluid motion is determined by a host of kinetic and magnetic coherent structures of different …

Environmental fluid mechanics underlies a wealth of natural, industrial, and, by extension,
societal challenges. In the coming decades, as we strive towards a more sustainable planet …

Transport barriers are observed inhibitors of the spread of substances in flows. The
collection of such barriers offers a powerful geometric template that frames the main …

Our understanding of the material organization of complex fluid flows has benefited recently
from mathematical developments in the theory of objective coherent structures. These …

We derive measures of local material stretching and rotation that are computable from
individual trajectories without reliance on other trajectories or on an underlying velocity field …

Several procedures have been proposed to modify non-objective (observer-dependent)
local vortex criteria so that they become objective. These modifications are only justifiable if …

The flow and saliva particulate transport dynamics during normal human breathing through
the mouth are simulated numerically using an Eulerian large-eddy simulation (LES) …

Approximate streamsurfaces of a three-dimensional velocity field have recently been
constructed as isosurfaces of the closest first integral of the velocity field. Such approximate …

Instantaneous features of three-dimensional velocity fields are most directly visualized via
streamsurfaces. It is generally unclear, however, which streamsurfaces one should pick for …

Spatial regions that do not mix effectively with their surroundings and, thus, contribute less to
the heat transport in fully turbulent three-dimensional Rayleigh-Bénard flows are identified …