https://meetings-archive.aps.org/dfd/2012/m4/10/
Air Entrapment for Liquid Drops Impacting a Solid Substrate - Limits of the potential flow model...
Using high-speed photography coupled with optical interference, we experimentally study the air entrapment during a liquid drop impacting a solid substrate. We
air entrapmentliquiddropssolidsubstrate
https://scholar.smu.edu/engineering_mechanical_etds/32/
"The Effect of Surface Air Entrapment on Oscillating Fin Flow at Interm" by Nicholas Davis
Oscillating fin flow has been a subject of study due to its simplicity and similarity to aquatic propulsion methods found in nature. At intermediate Reynolds...
the effectair entrapmentsurfaceoscillatingfin