Turbulent Bubbly Channel Flow: Role of Bubble Deformability

TL;DR

This study uses direct numerical simulations to investigate how bubble deformability influences flow patterns and flow rate in turbulent bubbly channel flows, revealing a transition from central to wall-adjacent bubbles as deformability decreases.

Contribution

It provides new insights into the impact of bubble deformability on flow structure and dynamics in turbulent vertical channels.

Findings

Deformable bubbles tend to stay in the channel center.

Nearly spherical bubbles slide along the walls.

Flow pattern transition depends on bubble deformability.

Abstract

This article describes the fluid dynamics video: "Turbulent Bubbly Channel Flow: Role of Bubble Deformability." The effect of bubble deformability on the flow rate of bubbly upflow in a turbulent vertical channel is examined using direct numerical simulations. A series of simulations with bubbles of decreasing deformability shows a transition from flow where deformable bubbles remain in the middle of the channel to a situation where nearly spherical bubbles slide along the walls.