Computational study of the dynamics of the taylor bubble

Evgenii L. Sharaborin, Oleg A. Rogozin, Aslan R. Kasimov

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We perform high-resolution numerical simulations of three-dimensional dynamics of an elongated bubble in a microchannel at moderate Reynolds numbers up to 1800. For this purpose, we use the coupled Brinkman penalization and volume of fluid methods implemented in the open-source framework Basilisk. The new results are validated with available experimental data and compared with previous numerical and theoretical predictions. We extend existing results to regimes with significant inertia, which are characterized by intense deformations of the bubble, including cases with azimuthal symmetry breaking. Various dynamical features are analyzed in terms of their spatiotemporal characteristics, such as frequencies and wavelengths of the bubble surface undulations and vortical structures in the flow.

Original languageEnglish
Article number389
JournalFluids
Volume6
Issue number11
DOIs
Publication statusPublished - Nov 2021

Keywords

  • Adaptive mesh refinement
  • Basilisk
  • Brinkman penalization
  • Direct numerical simulation
  • Incompressible multiphase flow
  • Microfluidics
  • Symmetry breaking
  • Taylor bubble
  • Taylor flow
  • Volume of fluid method
  • Vortex identification

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