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Numerical Simulation of the Passage of Small Liquid Droplets Through a Thin Liquid Film
KTH, Skolan för teknikvetenskap (SCI), Mekanik, Fysiokemisk strömningsmekanik.ORCID-id: 0000-0003-2830-0454
KTH, Skolan för elektro- och systemteknik (EES), Mikrosystemteknik.ORCID-id: 0000-0001-9552-4234
KTH, Skolan för elektro- och systemteknik (EES), Mikrosystemteknik.ORCID-id: 0000-0001-8248-6670
KTH, Skolan för teknikvetenskap (SCI), Mekanik, Fysiokemisk strömningsmekanik.ORCID-id: 0000-0003-3336-1462
2008 (engelsk)Inngår i: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON NANOCHANNELS, MICROCHANNELS, AND MINICHANNELS, NEW YORK: AMER SOC MECHANICAL ENGINEERS , 2008, s. 857-861Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

We simulate numerically a novel method for dispensing, mixing and ejecting of picolitre liquid samples in a single step. The system consists of a free liquid film, suspended in a frame and positioned in front of a droplet dispenser. On impact, a picolitre droplet merges with the film, but due to its momentum, passes through and forms a droplet that separates on the other side and continues its flight. Through this process the liquid in the droplet and that in the film is mixed in a controlled way. We model the flow using the Navier Stokes together with the Cahn-Hilliard equations. This system allows us to simulate the motion of a free surface in the presence of surface tension during merging, mixing and ejection of droplets. The influence of dispensing conditions was studied and it was found that the residual velocity of droplets after passage through the thin liquid film matches the measured velocity from the experiment well.

sted, utgiver, år, opplag, sider
NEW YORK: AMER SOC MECHANICAL ENGINEERS , 2008. s. 857-861
Emneord [en]
Thermodynamics Engineering, Mechanical Nanoscience & Nanotechnology
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-24745DOI: 10.1115/ICNMM2008-62319ISI: 000262925200107Scopus ID: 2-s2.0-77952625603ISBN: 978-0-7918-4834-0 (tryckt)OAI: oai:DiVA.org:kth-24745DiVA, id: diva2:356416
Konferanse
6th International Conference on Nanochannels, Microchannels, and Minichannels Darmstadt, GERMANY, JUN 23-25, 2008
Merknad
QC 20101012Tilgjengelig fra: 2010-10-12 Laget: 2010-09-27 Sist oppdatert: 2011-09-08bibliografisk kontrollert

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