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Impact of viscoelastic droplets
KTH / Jiangsu University, Zhenjiang, Peoples R China.
KTH.
2017 (English)In: Journal of Non-Newtonian Fluid Mechanics, ISSN 0377-0257, E-ISSN 1873-2631, Vol. 243, 38-46 p.Article in journal (Refereed) Published
Abstract [en]

We conduct numerical experiments on viscoelastic droplets hitting a flat solid surface. The results present time-resolved non-Newtonian stresses acting in the droplet. Comparing with the simulation of the impact of a Newtonian droplet, the effects of viscoelasticity on droplet behaviors such as splashing, the maximum spreading diameter and deformation are analyzed. With detailed information on the contact line region, we demonstrate how the contact line behaves according to the transition of the fluid property from elasticity dominated to shear-thinning dominated when a droplet expands and contracts on the substrate. The propose of this work is to discuss whether and how the elasticity in an impinging droplet takes effect.

Place, publisher, year, edition, pages
2017. Vol. 243, 38-46 p.
Keyword [en]
Droplet impact, Viscoelasticity, Contact line, Diffuse interface, Dynamic wetting
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:sh:diva-32996DOI: 10.1016/j.jnnfm.2017.03.003ISI: 000401379500004OAI: oai:DiVA.org:sh-32996DiVA: diva2:1117972
Available from: 2017-06-29 Created: 2017-06-29 Last updated: 2017-07-03Bibliographically approved

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Amberg, Gustav

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