Air bubble injection at the wall of a viscous shear flow is filmed using a high-speed video camera. The temporal evolution of the bubble radius and position of its center of gravity throughout its growth is determined from image processing. The experimental results are then used to validate a balance of the forces acting on the bubbles during their growth and after their detachment within the limit of small bubble Reynolds numbers. The contact angles calculated from the force balance agree well with those obtained by image processing. Finally, the force balance is used to predict the bubble radius at detachment versus the gas flow rate injected through the wall and the shear rate of the liquid flow.
No takes yet. Share an insight, caveat, or question.
Duhar et al. (2004) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context:
More from Physics of Fluids