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Evaporation effects in elastocapillary aggregation


Type

Article

Change log

Authors

Hadjittofis, Andreas 
Lister, John R 
Singh, Kiran 
Vella, Dominic 

Abstract

jats:pWe consider the effect of evaporation on the aggregation of a number of elastic objects due to a liquid’s surface tension. In particular, we consider an array of spring–block elements in which the gaps between blocks are filled by thin liquid films that evaporate during the course of an experiment. Using lubrication theory to account for the fluid flow within the gaps, we study the dynamics of aggregation. We find that a non-zero evaporation rate causes the elements to aggregate more quickly and, indeed, to contact within finite time. However, we also show that the final number of elements within each cluster decreases as the evaporation rate increases. We explain these results quantitatively by comparison with the corresponding two-body problem and discuss their relevance for controlling pattern formation in elastocapillary systems.</jats:p>

Description

Keywords

capillary flows, interfacial flows (free surface), lubrication theory

Journal Title

JOURNAL OF FLUID MECHANICS

Conference Name

Journal ISSN

0022-1120
1469-7645

Volume Title

Publisher

Cambridge University Press (CUP)
Sponsorship
KS and DV wish to acknowledge the support of the King Abdullah University of Science and Technology (KAUST; Award No. KUK-C1-013-04), and the John Fell Oxford University Press (OUP) Research Fund.