On air entrainment in a water pool by impingement of a jet

Vatsal Sanjay, Arup Kumar Das*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)
693 Downloads (Pure)


Air entrainment due to impingement of a water jet on a pool is studied extensively to understand the physics of the initiation and the cluster of bubbles formed below the free surface. Possible outcomes due to the jet impingement in a pool have been identified as smooth free surface without entrainment or formation of rigorous bubble cluster below the jet-pool contact. Triangular entrained region is found to be a three-dimensional association of disconnected bubble population continuously breaking and making with the neighbors. A correlation for prediction of maximum entrained height for a range of jet diameters and lengths is proposed. The trajectory of a single bubble is also studied to understand the kinematics of the bubble cluster. Alongside, an electrical conductivity probe has been used to examine the probabilistic presence of the bubble at a given depth in the liquid pool.

Original languageEnglish
Pages (from-to)5169-5181
Number of pages13
JournalAIChE journal
Issue number11
Publication statusPublished - 1 Nov 2017
Externally publishedYes


  • Entrainment
  • Interface dynamics
  • Jet-pool interaction
  • n/a OA procedure


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