Simulation of a cusped bubble rising in a viscoelastic fluid with a new numerical method

TL;DR

This paper introduces a novel lattice Boltzmann method for simulating two-phase viscoelastic flows, successfully reproducing complex bubble shapes observed experimentally.

Contribution

A new numerical method for simulating two-phase viscoelastic flows, enabling detailed analysis of bubble dynamics in such fluids.

Findings

Reproduced the cusp at the bubble's trailing end

Validated the method against experimental observations

Enhanced understanding of bubble behavior in viscoelastic fluids

Abstract

We developed a new lattice Boltzmann method that allows the simulation of two-phase flow of viscoelastic liquid mixtures. We used this new method to simulate a bubble rising in a viscoelastic fluid and were able to reproduce the experimentally observed cusp at the trailing end of the bubble.