Effect of liquid elasticity on the behaviour of high-speed focused jets
Author
dc.contributor.author
Franco Gómez, A.
Author
dc.contributor.author
Onuki, H.
Author
dc.contributor.author
Yokoyama, Y.
Author
dc.contributor.author
Nagatsu, Y.
Author
dc.contributor.author
Tagawa, Y.
Admission date
dc.date.accessioned
2021-09-22T15:43:53Z
Available date
dc.date.available
2021-09-22T15:43:53Z
Publication date
dc.date.issued
2021
Cita de ítem
dc.identifier.citation
Experiments in Fluids (2021) 62:41
es_ES
Identifier
dc.identifier.other
10.1007/s00348-020-03128-w
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/182047
Abstract
dc.description.abstract
We investigate the effect of highly contrasting non-Newtonian liquid properties on the formation of liquid jets with a focused shape. By using two nozzle-free ejection techniques, mechanically impact- and laser-induced, fast jets of a highly elastic (sodium polyacrylate) and weakly elastic (xanthan-gum) diluted polymer solutions are generated. A unique high-speed effect is encountered at the jet ejection onset of the highly elastic solution. Its jet-tip speed is on average 1.4 times faster in comparison to a Newtonian (glycerin/water) and the weakly elastic liquids. We explain this effect occurring as a result of the high viscoelasticity of the sodium polyacrylate solution. Additionally, a 'bungee jumper' jet behaviour (Morrison and Harlen in Rheol Acta 49(6):619-632, 2010) is observed in a regime of high speed (10 < V-j < 40 m/s) and high viscosity (mu > 20 mPa s) not previously examined. We additionally characterise the viscoelastic non-breakup jet limit using the Bazilevskii et al. (Fluid Dyn 40(3):376-392, 2005) ejection criterion. Herein, the extensional rheological parameters are measured implementing a novel DoS-CaBER technique (Dinic et al. in Lab Chip 17(3):460-473, 2017). Our findings may influence results of inkjet printing technologies and recent nozzle-free ejection systems for ejecting liquids with non-Newtonian properties.
es_ES
Patrocinador
dc.description.sponsorship
Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT)
Japan Society for the Promotion of Science
Grants-in-Aid for Scientific Research (KAKENHI)
17H01246
20H00223
ANID FONDECYT, Chile
3200093