The attractive and repulsive behaviours of a pair initially spherical gas bubbles rising side-by-side in channel with non-uniformly heated walls containing self-rewetting liquid are investigated numerically. surface tension fluid exhibits parabolic temperature dependence well-defined minimum, as opposed to linear (common) fluids whose decreases almost linearly the increasing temperature. It is ...

We study the linear stability of bubbles in a capillary tube under external flow. Yu et al. ( J. Fluid Mech. , vol. 911, 2021, pp. 1–19) showed that rich variety bubble dynamics occurs when downward flow is applied, opposing buoyancy-driven ascent bubble. They found experimentally and numerically existence two branches solutions overlap over finite range number cases where Reynolds small Bond l...

An Eulerian-Lagrangian approach is developed for the simulation of turbulent bubbly flows in complex systems. The liquid phase is treated as a continuum and the Navier-Stokes equations are solved in an unstructured grid, finite volume framework for turbulent flows. The dynamics of the disperse phase is modeled in a Lagrangian frame and includes models for motion of each individual bubble, bubbl...

OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. On the computation of viscous terms for incompressible two-phase flows with Level Set/Ghost Fluid Method. a b s t r a c t In this paper, we present a detailed analysis of the computation of the viscous terms for the simulation of incompressible two-phase f...

Most real life bubble dynamics applications involve multiple bubbles, for example, in cavitation erosion prevention, ultrasonic baths, underwater warfare, and medical applications involving microbubble contrast agents. Most scientific dealings with bubble-bubble interaction focus on two similarly sized bubbles. In this study, the interaction between two oscillating differently sized bubbles (ge...

We present a new fluid animation technique in which liquid and gas interact with each other, using the example of bubbles rising in water. In contrast to previous studies which only focused on one fluid, our system considers both the liquid and the gas simultaneously. In addition to the flowing motion, the interactions between liquid and gas cause buoyancy, surface tension, deformation and move...