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Transfer of a microfluid to a stochastic fibre network
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
2011 (English)In: Journal of Fluids and Structures, ISSN 0889-9746, E-ISSN 1095-8622, Vol. 27, no 7, 937-946 p.Article in journal (Refereed) Published
Abstract [en]

The transfer of a microscopic fluid droplet from a flat surface to a deformable stochastic fibre network is investigated. Fibre networks are generated with different levels of surface roughness, and a two-dimensional, two-phase fluid-structure model is used to simulate the fluid transfer. In simulations, the Navier-Stokes equations and the Cahn-Hilliard phase-field equations are coupled to explicitly include contact line dynamics and free surface dynamics. The compressing fibre network is modelled as moving immersed boundaries. The simulations show that the amount of transferred fluid is approximately proportional to the contact area between the fluid and the fibre network. However, areas where the fluid bridges and never actually makes contact with the substrate must be subtracted.

Place, publisher, year, edition, pages
2011. Vol. 27, no 7, 937-946 p.
Keyword [en]
Fibre network, Flexo, Fluid-structure interaction, Fluid transfer, Moving boundaries, Two-phase flow
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-46177DOI: 10.1016/j.jfluidstructs.2011.06.003ISI: 000295300900004Scopus ID: 2-s2.0-80052260413OAI: oai:DiVA.org:kth-46177DiVA: diva2:453584
Note
QC 20111103Available from: 2011-11-03 Created: 2011-11-02 Last updated: 2017-12-08Bibliographically approved

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