Dynamics of micro- bubble entrainment inside a deep liquid film due to spray impact

In this work, an experimental study of liquid spray impacting onto a deep liquid layer is presented. Results obtained in this study indicate that the normal velocity component of the rising bubbles under influence of the impacting spray differs significantly from the computed rise velocity of the air bubbles inside a stationary liquid film. Based on the results obtained in this study, the normal velocity component of the rising or ejectingbubbles doesn’t change significantly with the film depth, whereas the tangential velocity component changes significantly after a certain film depth. In contrast to the bubble size distribution, the velocity distribution of the bubbles does not exhibit a wide distribution range. This result indicates that the bubble motion inside the deep film under spray impact condition is mostly influenced by the hydrodynamic pressure inside the film and not by the bubble size

Keywords:

bubble , micro bubble , spray , two phase flow , deep pool