A mathematical model for the simulation of spherical bubble dynamics in binary alkane mixtures is presented. Detailed heat and mass transfer phase transition are resolved, air absorption desorption considered. As example mixtures, high-volatile heptane low-volatile dodecane investigated. The component shows a convective counter-intuitive transport opposite to diffusion flux. staggered flux asso...

In this investigation, CFD simulation is presented to study the hydrodynamic of bubbly flow and mass transfer in bubble column using EulerianEulerian Multifluid approach with a standard kε turbulence model. unsteady state method for modeling the multiphase flow and mass transfer from air to de-aerated water and the column hydrodynamics. Understanding the complexity of the fluid dynamics and mas...

Dark matter bubble chamber detectors use piezoelectric sensors in order to detect and discriminate the acoustic signals emitted by the bubbles grown within the superheated fluid from a nuclear recoil produced by a particle interaction. These sensors are attached to the outside walls of the vessel containing the fluid. The acoustic discrimination depends strongly on the properties of the sensor ...

A numerical technique (FGVT) for solving the time-dependent incompressible Navier–Stokes equations in fluid flows with large density variations is presented for staggered grids. Mass conservation is based on a volume tracking method and incorporates a piecewise-linear interface reconstruction on a grid twice as fine as the velocity–pressure grid. It also uses a special flux-corrected transport ...

The origin of sonoluminescence, the conversion of acoustic energy into ultraviolethisible radiation in liquids, has remained elusive. We propose that the emission arises from electrons confined to voids in the hot, dense fluid formed during the final stages of bubble collapse. Such electrons are produced by high-temperature ionization of the bubble constituents. A hard-sphere-based model was de...

In present paper acombination of three-dimensional isothermal and two-dimensional non-isothermal Lattice Boltzmann Method have been used to simulate the motion of bubble and effect of wetting properties of the surface on bubble separation. By combining these models, three-dimensional model has been used in two-dimension for decreasing the computational cost. Firstly, it has been ensured that th...

A gas layer in the form of bubbles exists at the bottom surface of anodes in aluminium electrolytic cells in the HallHeroult process. The gas bubbles increase electrical resistance, cause an additional voltage drop and increase energy consumption. While the presence of gas bubbles is an inherent feature of the process, it is important to assess their contribution to voltage drop however this is...

Discrete Element Model (DEM) is used to simulate bubble and particle interactions with vortical flows. In this Euler-Lagrange approach, volume-averaged Navier-Stokes equations are solved using a co-located grid finite volume method. The dispersed phase is assumed spherical and is modeled by tracking the centroids of the particles/bubbles in a Lagrangian frame. In addition to interphase momentum...