Impact of a high-speed train of microdrops on a liquid pool

W. Bouwhuis, X Huang, C.U. Chan, P.E. Frommhold, C.D. Ohl, Detlef Lohse, Jacobus Hendrikus Snoeijer, Roger M. van der Meer

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Scopus)

Abstract

A train of high-speed microdrops impacting on a liquid pool can create a very deep and narrow cavity, reaching depths more than 1000 times the size of the individual drops. The impact of such a droplet train is studied numerically using boundary integral simulations. In these simulations, we solve the potential flow in the pool and in the impacting drops, taking into account the influence of liquid inertia, gravity and surface tension. We show that for microdrops the cavity shape and maximum depth primarily depend on the balance of inertia and surface tension and discuss how these are influenced by the spacing between the drops in the train. Finally, we derive simple scaling laws for the cavity depth and width.
Original languageEnglish
Pages (from-to)850-868
Number of pages19
JournalJournal of fluid mechanics
Volume792
DOIs
Publication statusPublished - 2016

Keywords

  • IR-100768
  • METIS-317322

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