Droplet impact onto an elastic plate: a new mechanism for splashing

Pegg, Michael, Purvis, Richard and Korobkin, Alexander (2018) Droplet impact onto an elastic plate: a new mechanism for splashing. Journal of Fluid Mechanics, 839. pp. 561-593. ISSN 0022-1120

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During a droplet impact onto a substrate, splashing is known to be caused by the presence of surrounding gas or by surface roughness. Impact occurring in a vacuum onto a smooth rigid wall results in droplet spreading, rather than development of a corona or prompt splash. Here we present an analytical and numerical study of a third potential splashing mechanism, namely elastic deformation of the substrate. An axisymmetric Wagner-style model of droplet impact is formulated and solved using the method of normal modes, together with asymptotic analysis and numerical methods. We highlight the effect that a flexible substrate brings to the contact line velocity and jet behaviour, demonstrating that oscillation of the substrate can cause blow-up of the splash jet which is absent for a rigid substrate and indicate the onset of splashing.

Item Type: Article
Faculty \ School: Faculty of Science > School of Mathematics
Depositing User: Pure Connector
Date Deposited: 12 Feb 2018 11:30
Last Modified: 22 Jul 2020 01:59
URI: https://ueaeprints.uea.ac.uk/id/eprint/66271
DOI: 10.1017/jfm.2018.60

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