Air entrainment by a viscous jet plunging into a bath

E Lorenceau, D Quere, JG Eggers

Research output: Contribution to journalArticle (Academic Journal)peer-review

37 Citations (Scopus)


A liquid jet plunging into a container of liquid often entrains a thin film of air with it, producing bubbles. This bubble production is detrimental to many industrial processes, such as filling a container with a molten glass or polymer, or in coating processes. Conversely, in making a foam, one uses this effect; hence it is important to control the rate of bubble production. Here, we measure the amount of air entrained by a viscous jet over a wide range of parameters and explain the phenomenon theoretically. Simple scaling arguments are shown to predict entrainment rates over 4 orders of magnitude in the dimensionless jet speed.
Translated title of the contributionAir entrainment by a viscous jet plunging into a bath
Original languageEnglish
Article numberArt. NO. 254501
JournalPhysical Review Letters
Volume93 (25)
Publication statusPublished - Dec 2004

Bibliographical note

Publisher: American Physical Soc
Other identifier: IDS Number: 880JD

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