This review focuses on direct numerical simulations (DNS) of turbulent flows laden with
droplets or bubbles. DNS of these flows are more challenging than those of flows laden with …

The lubrication of external liquid flow with a bubbly mixture or gas layer has been the goal of
engineers for many years, and this article presents the underlying principles and recent …

Fluid turbulence is commonly associated with stronger drag, greater heat transfer, and more
efficient mixing than in laminar flows. In many natural and industrial settings, turbulent liquid …

For centuries, bubbles have fascinated artists, engineers, and scientists alike. In spite of
century-long research on them, new and often surprising bubble phenomena, features, and …

The injection of gas bubbles into a turbulent boundary layer of a liquid phase has multiple
different impacts on the original flow structure. Frictional drag reduction is a phenomenon …

Small amounts of surfactant can drastically change bubble behavior. For example, a bubble
in aqueous surfactant solution rises much slower than one in purified water. This …

Direct numerical simulation (DNS) of spatially developing turbulent boundary layer with
uniform blowing (UB) or uniform suction (US) is performed aiming at skin friction drag …

Sedimentation of a dispersed solid phase is widely encountered in applications and
environmental flows, yet little is known about the behaviour of finite-size particles in …

Bubbly turbulent Taylor–Couette (TC) flow is globally and locally studied at Reynolds
numbers of. We conclude that bubble deformability is a relevant mechanism behind the …

Bubbly turbulent flows involve complex interactions between bubbles and vortices, in which
their size ratio plays a critical role. The present work investigates an idealization, namely, the …