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.
Subject
Fluid Flow and Transfer Processes,Mechanical Engineering,Condensed Matter Physics
Reference49 articles.
1. Microfluidics-a review
2. Fundamentals and applications of inertial microfluidics: a review
3. Emerging Droplet Microfluidics
4. Droplets and Bubbles in Microfluidic Devices
5. Bubble size distribution and stability of CO2 microbubbles for enhanced oil recovery: Effect of polymer, surfactant and salt concentrations;Le;J. Dispers. Sci. Technol.,2021
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