McIlroy, C and Harlen, OG orcid.org/0000-0002-4593-3547 (2019) Effects of drive amplitude on continuous jet break-up. Physics of Fluids, 31 (6). 064104. ISSN 1070-6631
Abstract
We develop a one-dimensional model of jet breakup in continuous inkjet printing to explore the nonlinear behavior caused by finite-amplitude modulations in the driving velocity, where jet stability deviates from classic (linear) “Rayleigh” behavior. At low driving amplitudes and high Weber numbers, the spatial instability produces drops that pinch-off downstream of the connecting filament, leading to the production of small satellite droplets between the main drops. On the other hand, we identify a range of driving amplitudes where pinching becomes “inverted,” occurring upstream of the filament connecting the main drops, rather than downstream. This inverted breakup is preferable in printing, as it increases the likelihood of satellite drops merging with the main drops. We find that this behavior can be controlled by the addition of a second harmonic to the driving signal. This model is in quantitative agreement with a full axisymmetric simulation, which incorporates nozzle geometry.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 Author(s). This is an author produced version of an article published in Physics of Fluid. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mathematics (Leeds) > Applied Mathematics (Leeds) |
Funding Information: | Funder Grant number EPSRC EP/H018913/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 15 Jul 2019 10:30 |
Last Modified: | 16 Jul 2019 10:53 |
Status: | Published |
Publisher: | AIP Publishing |
Identification Number: | 10.1063/1.5099016 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:148515 |