Effect of bubble deformability on the vertical channel bubbly flow

TL;DR

This study uses direct numerical simulations to investigate how bubble deformability influences flow patterns and rates in turbulent vertical channels, revealing a sharp transition in bubble distribution and flow rate as deformability decreases.

Contribution

It provides new insights into the impact of bubble deformability on flow dynamics in vertical channels through detailed numerical simulations.

Findings

Decreasing bubble deformability causes a transition from uniform middle-channel distribution to wall-peaked distribution.

Flow rate significantly decreases as bubbles become less deformable.

A sharp transition in flow behavior occurs at a critical deformability threshold.

Abstract

This article describes the fluid dynamics video: "Effect of bubble deformability on the vertical channel bubbly flow". 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 reveals a sharp transition from a flow with deformable bubbles uniformly distributed in the middle of the channel to a flow with nearly spherical bubbles with a wall-peak bubble distribution and a much lower flow rate.