What is it about?
This study employs COMSOL software to simulate the upward motion of a single bubble in quiescent water, considering various container dimensions and air bubble sizes. The research reveals a strong agreement between empirical formulas and numerical simulations, emphasizing the precision of COMSOL. Findings include the impact of drag forces on bubble shapes, the formation of vortices during ascent, and the concentration of vorticity within the bubble. The study explores how larger aspect ratios enhance ascent velocities, the influence of container diameter on rising speed, and the effects of gravitational forces. Overall, the research provides valuable insights into bubble dynamics in multiphase flows, benefiting diverse industrial applications and highlighting the utility of computational tools like COMSOL for studying complex phenomena.
Featured Image
Why is it important?
This study holds significance for industrial applications by providing a thorough examination of bubble dynamics in multiphase flows using COMSOL simulations. The research's validation of computational tools and comprehensive coverage of diverse container dimensions and bubble sizes offer versatile insights applicable across various industrial settings. The findings contribute to a deeper understanding of forces influencing bubble behavior, such as drag forces and gravitational effects, offering potential for process optimization and resource utilization improvements. Seeing vortices and unevenness during bubble ascent also helps us learn more about how fluids move. And the fact that numerical simulations and empirical formulas agree so well with each other backs up theoretical approaches, making it easier to trust established models that predict bubble dynamics in multiphase systems.
Perspectives
The perspective of this work is multi-faceted. Firstly, from an industrial standpoint, the study provides valuable insights into the behavior of bubbles in multiphase flows, offering potential applications in optimizing various industrial processes, such as those in chemical engineering and materials processing. Secondly, it contributes to the field of computational fluid dynamics by validating the capabilities of the COMSOL software in accurately simulating complex phenomena, showcasing its utility for researchers and engineers in studying multiphase systems. Thirdly, the findings enhance the scientific understanding of the forces governing bubble dynamics, including the impact of drag forces, gravitational effects, and vorticity patterns. This expanded knowledge has implications not only for industrial applications but also for advancing fundamental understanding in fluid dynamics. Overall, the perspective of this work is both applied and theoretical, bridging the gap between practical industrial insights and advancements in computational modeling and fluid dynamics research.
Hayder Mohammed
University of Garmian
Read the Original
This page is a summary of: Dynamics of single bubble ascension in stagnant liquid: An investigation into multiphase flow effects on hydrodynamic characteristics using computational simulation, Physics of Fluids, December 2023, American Institute of Physics,
DOI: 10.1063/5.0174622.
You can read the full text:
Contributors
The following have contributed to this page
