Influence of viscosity and interface tension on water droplet injection in oil

Author

Xia, Yu ; Reboud, J.-L. ; Atten, P.

Author_Institution

G2Elab., Univ. Grenoble Alpes, Grenoble, France

fYear

2014

fDate

June 29 2014-July 3 2014

Firstpage

1

Lastpage

6

Abstract

Drop-on-demand technique was developed, based on multi-stage high voltage electric pulse applied on conductive liquid meniscus hanging from a needle [1]. It is applied to the injection of a water droplet in oil, and allows injecting droplets from the same needle in a wide range of diameter, smaller than the needle one. The paper presents experiments of droplet injection in two types of mineral oil: Marcol 52, Primol 352, for varying interface tension and viscosity parameters. High speed video and numerical simulations helped understanding the main physical effects occurring during water droplet formation.

Keywords

drops; electrohydrodynamics; flow simulation; flow visualisation; numerical analysis; oils; surface tension; two-phase flow; viscosity; water; Marcol 52; Primol 352; conductive liquid meniscus; drop-on-demand technique; high speed video; interface tension; mineral oil; multistage high voltage electric pulse; needle; numerical simulations; physical effects; viscosity parameters; water droplet formation; water droplet injection; Cameras; drop-on-demand technique; electrohydrodynamics; high voltage pulse; liquid-liquid interface; numerical simulations;

fLanguage

English

Publisher

ieee

Conference_Titel

Dielectric Liquids (ICDL), 2014 IEEE 18th International Conference on

Conference_Location

Bled

Type

conf

DOI

10.1109/ICDL.2014.6893160

Filename

6893160