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 …

Gas bubbles are of major importance in most metallurgical processes. They promote
chemical reactions, homogenize the melt, or float inclusions. Thus, their dynamics are of …

A finite-difference/front-tracking method is developed for simulations of soluble surfactants in
3D multiphase flows. The interfacial and bulk surfactant concentration evolution equations …

We report results from the first systematic experiments for investigating surfactant effects on
path instability of an air bubble rising in quiescent water. The addition of surfactant to a gas …

Bubbly flows are frequently run into in industrial processes. Since liquid phases usually
contain impurities, bubble interface is polluted to a certain degree. This can affect flow …

In recent years CFD has proven itself as a valuable tool for gaining insight in flow
phenomena in general and complex multiphase flows arising in process equipment in …

Aspect ratios of ellipsoidal bubbles in clean and contaminated systems were measured to
investigate the effects of surfactant on the bubble aspect ratio. The bubble diameter ranged …

Lift force on a spherical droplet in a viscous linear shear flow Page 1 J. Fluid Mech. (2024), vol.
1000, A88, doi:10.1017/jfm.2024.1072 Lift force on a spherical droplet in a viscous linear shear …

Effects of soluble surfactant on the terminal velocity of a Taylor bubble rising through a
vertical pipe are investigated using an interface tracking method. A level set method is …

In this study, we investigate, using direct numerical simulation, the motion of a small bubble
in a horizontal microchannel filled with a liquid containing surfactants. In particular, we study …