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Experiments in Fluids
Erschienen in: Experiments in Fluids 9/2013

01.09.2013 | Research Article

LDV characterization and visualization of the liquid velocity field underneath an impacting drop in isothermal conditions

verfasst von: Maurizio Santini, Stephanie Fest-Santini, Gianpietro Elvio Cossali

Erschienen in: Experiments in Fluids | Ausgabe 9/2013

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Abstract

The paper reports an experimental investigation by LDV and high-speed camera visualization, of the fluid motion underneath water drop impacting onto a deep pool of the same liquid for different drop impact velocities in the low Weber number regime in isothermal conditions. Vortex ring structures could be very sensitive of pool and ambient temperature, which may both affect the crater evolution (through the influence on surface tension) and directly the vortex ring evolution by changing the Reynolds number through the variation of the viscosity. The measured velocity field is compared to the visualization results to clarify some peculiar regimes of crater evolution (like bubble entrapment, vortex ring motion, etc.) during the expansion and the recoiling phase.
Vorheriger Artikel Experimental study on flow kinematics and impact pressure in liquid sloshing
Nächster Artikel Measuring liquid film thickness in annular two-phase flows by cold neutron imaging

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Metadaten
Titel
LDV characterization and visualization of the liquid velocity field underneath an impacting drop in isothermal conditions
verfasst von
Maurizio Santini
Stephanie Fest-Santini
Gianpietro Elvio Cossali
Publikationsdatum
01.09.2013
Verlag
Springer Berlin Heidelberg
Erschienen in
Experiments in Fluids / Ausgabe 9/2013
Print ISSN: 0723-4864
Elektronische ISSN: 1432-1114
DOI
https://doi.org/10.1007/s00348-013-1593-4

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