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

9 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

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high speed
inertia
cavities
Surface tension
interfacial tension
Liquids
liquids
potential flow
Potential flow
Scaling laws
scaling laws
Gravitation
simulation
spacing
gravitation

Keywords

  • IR-100768
  • METIS-317322

Cite this

Bouwhuis, W. ; Huang, X ; Chan, C.U. ; Frommhold, P.E. ; Ohl, C.D. ; Lohse, Detlef ; Snoeijer, Jacobus Hendrikus ; van der Meer, Roger M. / Impact of a high-speed train of microdrops on a liquid pool. In: Journal of fluid mechanics. 2016 ; Vol. 792. pp. 850-868.
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Impact of a high-speed train of microdrops on a liquid pool. / Bouwhuis, W.; Huang, X; Chan, C.U.; Frommhold, P.E.; Ohl, C.D.; Lohse, Detlef; Snoeijer, Jacobus Hendrikus; van der Meer, Roger M.

In: Journal of fluid mechanics, Vol. 792, 2016, p. 850-868.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Huang, X

AU - Chan, C.U.

AU - Frommhold, P.E.

AU - Ohl, C.D.

AU - Lohse, Detlef

AU - Snoeijer, Jacobus Hendrikus

AU - van der Meer, Roger M.

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AB - 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.

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