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Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/6802

Title: Binary-mixture droplet evaporation: Lubrication approximation and coffee ring formation
Authors: Tembely, M
Mercier, AG
Nayoze, C
Soucemarianadin, A
3rd Micro and Nano Flows Conference (MNF2011)
Keywords: Modeling
Drop evaporation
Lubrication approximation
Marangoni effect
Coffee ring
Publication Date: 2011
Publisher: Brunel University
Citation: 3rd Micro and Nano Flows Conference, Thessaloniki, Greece, 22-24 August 2011
Abstract: In this paper the dynamics of an evaporating sessile droplet spreading on a horizontal substrate is reported. A mathematical model based on the lubrication approximation is developed accounting for Marangoni effect, contact line motion, and multi-component fluid. After validating the model through pure liquid spreading and evaporation, an extension of the model is performed on a binary component liquid in which composition changes occur during the drying process. Furthermore, the presence of particles in the fluid enables to retrieve the coffee-ring formation. A good qualitative and quantitative agreement between the model and experimental observations is found.
Description: This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, Aristotle University of Thessaloniki, University of Thessaly, IPEM, the Process Intensification Network, the Institution of Mechanical Engineers, the Heat Transfer Society, HEXAG - the Heat Exchange Action Group, and the Energy Institute.
Sponsorship: This study is funded from ANR PAN’H 2008 CATIMINHY project.
URI: http://bura.brunel.ac.uk/handle/2438/6802
ISBN: 978-1-902316-98-7
Appears in Collections:Brunel Institute for Bioengineering (BIB)
The Brunel Collection

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