Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session D13: Drop Impact on Liquids
2:30 PM–4:40 PM,
Sunday, November 18, 2018
Georgia World Congress Center
Room: B218
Chair: David Brutin, Aix-Marseille University
Abstract ID: BAPS.2018.DFD.D13.2
Abstract: D13.00002 : A liquid drop impact on a liquid pool with an inclined bottom substrate*
2:43 PM–2:56 PM
Presenter:
Yeawan Lee
(KAIST)
Authors:
Yeawan Lee
(KAIST)
Kwangseok Park
(KAIST)
Youngdo Kim
(Daegu Science High School)
Hyoungsoo Kim
(KAIST)
A droplet impact phenomenon is one of the most common behaviors in nature. When a liquid droplet hits the liquid surface, it bounces and sometimes it shows peculiar jet behaviors depending on the experimental conditions. We investigated a vertical drop impingement onto a liquid pool with an oblique bottom wall. The experimental results were observed using a high speed camera. After the droplet impact, the oblique bottom of a liquid chamber generated asymmetric crater at the retraction regime followed by the inclined central jet toward the solid surface edge. We studied how the jet rebounds and tilts depending on various experimental parameters, e.g. depth, substrate angle, droplet diameter, impact velocity, surface tension and viscosity. This study presented the threshold condition to generate the inclined jet based on geometrical and physical variables. We will provide physical arguments to explain our experimental observation at the talk. We expect that this feature could be used in controlling the bounced jet direction near the edge of a liquid chamber.
*This work was supported by the Young Researchers Program (NRF-2018R1C1B6004190) of the National Research Foundation of Korea and BK21 Plus Program.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.D13.2
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