▪ Abstract Predicting the motion of bubbles in dispersed flows is a key problem in fluid
mechanics that has a bearing on a wide range of applications from oceanography to …

Mixing is the operation by which a system evolves under stirring from one state of simplicity—
the initial segregation of the constituents—to another state of simplicity—their complete …

Two idealized baroclinic wave‐6 life cycles examined here suggest a framework of opposite
extremes (a) in which to view the behaviour of real synoptic‐scale disturbances in middle …

Provides a new and more realistic framework for describing the dynamics of non-linear
systems. A number of issues arising in applied dynamical systems from the viewpoint of …

Synoptic, coarse-grain, isentropic maps of Ertel's potential vorticity Q for the northern middle
stratosphere, estimated using a large-Richardson-number approximation, are presented for …

The study of the magnetic fields of the Earth and Sun, as well as those of other planets, stars,
and galaxies, has a long history and a rich and varied literature, including in recent years a …

▪ Abstract This article reviews the transport properties of coherent vortices in rotating
barotropic flows. It is shown that vortices induce regular Lagrangian motion inside their …

The statistically stationary state of a turbulently advected passive scalar is studied, with an
imposed linear mean gradient in two dimensions, via a number of numerical experiments …

In this work we study the long time inviscid limit of the two dimensional Navier–Stokes
equations near the periodic Couette flow. In particular, we confirm at the nonlinear level the …

We study Sobolev regularity disturbances to the periodic, plane Couette flow in the 3D
incompressible Navier-Stokes equations at high Reynolds number Re. Our goal is to …