Li, S, Chu, F, Zhang, J et al. (2 more authors) (2020) Droplet jumping induced by coalescence of a moving droplet and a static one: Effect of initial velocity. Chemical Engineering Science, 211. 115252. ISSN 0009-2509
Abstract
To explore the effect of initial velocity on the droplet jumping induced by coalescence of a moving droplet and a static one, we performed simulations using the volume of fluid method with a dynamic contact angle model, and validated the simulation results against our experiments. The results show that the initial velocity of the moving droplet accelerates the droplet deformation during jumping, resulting in a unique departure feature. Droplet departs at different stages under different initial velocities, and the droplet departure velocity in the vertical direction is approximately constant at the first stage and then increases after Reynolds number reaches a critical value. The horizontal departure velocity is proportional to the initial velocity with a ratio of 0.4. The initial velocity also affects the energy conversion during the droplet jumping greatly. This work shall bring new insights into the droplet jumping behavior and promote its application in related fields.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2019 Elsevier Ltd. All rights reserved. This is an author produced version of a paper published in Chemical Engineering Science. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Droplet jumping; Initial velocity; Morphology; Departure velocity; Energy conversion rate |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 06 Jan 2020 10:27 |
Last Modified: | 27 Sep 2020 00:38 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.ces.2019.115252 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:155125 |