This review highlights the profound and unexpected ways in which viscosity varying in
space and time can affect flow. The most striking manifestations are through alterations of …

The evaporation of non-axisymmetric sessile drops is studied by means of experiments and
three-dimensional direct numerical simulations (DNS). The emergence of azimuthal currents …

Using the detailed numerical simulation data of primary atomization, the liquid surface
instability development that leads to atomization is characterized. The numerical results are …

Advances in pore-scale imaging (eg, μ-CT scanning), increasing availability of
computational resources, and recent developments in numerical algorithms have started …

A low-dimensional model capturing the fully coupled dynamics of a wavy liquid film in
interaction with a strongly confined laminar gas flow is introduced. It is based on the …

The shear instability occurring at the interface between a slow water layer and a fast air
stream is a complex phenomenon driven by momentum and viscosity differences across the …

In the framework of linear stability theory, we analyze how a liquid-gas mixing layer is
affected by several parameters: viscosity ratio, density ratio, and several length scales …

We analyse the linear stability of a reactive plane Poiseuille flow, where a reactant fluid A
overlies another reactant B in a layered fashion within a two-dimensional channel. Both …

We revisit the linear stability of a falling liquid film flowing through an inclined narrow
channel in interaction with a gas phase. We focus on a particular region of parameter space …

We consider the linear and nonlinear stability of two-phase density-matched but viscosity-
contrasted fluids subject to laminar Poiseuille flow in a channel, paying particular attention to …