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Kinematics of vortex ring generated by a drop upon impacting a liquid pool

Author(s): Saha, A; Wei, Y; Tang, X; Law, Chung K

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dc.contributor.authorSaha, A-
dc.contributor.authorWei, Y-
dc.contributor.authorTang, X-
dc.contributor.authorLaw, Chung K-
dc.date.accessioned2021-10-08T20:19:49Z-
dc.date.available2021-10-08T20:19:49Z-
dc.date.issued2019en_US
dc.identifier.citationSaha, A, Wei, Y, Tang, X, Law, CK. (2019). Kinematics of vortex ring generated by a drop upon impacting a liquid pool. Journal of Fluid Mechanics, 875 (842 - 853. doi:10.1017/jfm.2019.503en_US
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1h29c-
dc.description.abstractWe herein report an experimental study on the morphological evolution of a vortex ring formed inside a liquid pool after it is impacted and penetrated by a coalescing drop of the same liquid. The dynamics of the penetrating vortex ring along with the deformation of the pool surface has been captured using simultaneous high-speed laser induced fluorescence and shadowgraph techniques. It is identified that the motion of such a vortex ring can be divided into three stages, during which inertial, capillary and viscous effects alternatingly play dominant roles to modulate the penetration process, resulting in linear, non-monotonic and decelerating motion in these three stages respectively. Furthermore, we also evaluate the relevant time and length scales of these three stages and subsequently propose a unified description of the downward motion of the penetrating vortex ring. Finally, we use the experimental data for a range of drop diameters and impact speeds to validate the proposed scaling.en_US
dc.format.extent842 - 853en_US
dc.language.isoen_USen_US
dc.relation.ispartofJournal of Fluid Mechanicsen_US
dc.rightsFinal published version. This is an open access article.en_US
dc.titleKinematics of vortex ring generated by a drop upon impacting a liquid poolen_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1017/jfm.2019.503-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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