Air entrainment by a plunging jet under intermittent vortex conditions
Kevin Jin Kim, Kyle Corfman, Kevin Li, Ken T. Kiger
TL;DR
This study visually documents how a low-viscosity jet impacts a liquid pool, causing surface destabilization, breakup of an air gap, and bubble entrainment, under intermittent vortex conditions.
Contribution
It provides detailed visual analysis of air entrainment mechanisms during a plunging jet impact, highlighting transient surface dynamics and bubble entrainment processes.
Findings
Air gap destabilization and breakup observed
Bubbles entrained into the bulk liquid during impact
Transient vortex conditions influence surface behavior
Abstract
This fluid dynamic video entry to the 2011 APS-DFD Gallery of Fluid Motion details the transient evolution of the free surface surrounding the impact region of a low-viscosity laminar liquid jet as it enters a quiescent pool. The close-up images depict the destabilization and breakup of the annular air gap and the subsequent entrainment of bubbles into the bulk liquid.
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Taxonomy
TopicsFluid Dynamics and Heat Transfer · Fluid Dynamics and Mixing · Particle Dynamics in Fluid Flows