Shape oscillations of a nonspherical water droplet

Balla, Mounika and Tripathi, Manoj and Sahu, Kirti Chandra (2019) Shape oscillations of a nonspherical water droplet. Physical Review E, 99 (2). pp. 1-8. ISSN 2470-0045

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Abstract

The dynamics of a nonspherical droplet falling in air is investigated via three-dimensional numerical simulations of the Navier-Stokes and continuity equations. The main focus of this work is to study the effects of the relative influence of surface tension force over the inertial force and the orientation of the droplet. The values of the dimensionless parameters considered in this study are similar to those of a typical falling raindrop. Our results obtained from the numerical simulations for low values of Galilei number agree well with the theoretical predictions in the microgravity condition and in the limit of creeping flow. However, in the inertia-dominated region and for high initial aspect ratio, the droplet undergoes predominant nonlinear oscillations and subsequently breaks up. To the best of our knowledge, none of the previous studies have investigated dynamics of a tilted drop and observed the behavior reported in the present study.

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IITH Creators:
IITH CreatorsORCiD
Sahu, Kirti Chandrahttp://orcid.org/0000-0002-7357-1141
Item Type: Article
Additional Information: Scoups Index, Web of Index
Subjects: Chemical Engineering
Divisions: Department of Chemical Engineering
Depositing User: Team Library
Date Deposited: 16 Mar 2019 10:01
Last Modified: 25 Sep 2019 09:06
URI: http://raiith.iith.ac.in/id/eprint/4889
Publisher URL: http://doi.org/10.1103/PhysRevE.99.023107
OA policy: http://www.sherpa.ac.uk/romeo/issn/2470-0045/
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