Corona splashing triggered by a loose monolayer of particles

Ehsan Esmaili; Zih Yin Chen; Anupam Pandey; Seungho Kim; Sungyon Lee; Sunghwan Jung

doi:10.1063/5.0059466

Corona splashing triggered by a loose monolayer of particles

Ehsan Esmaili, Zih Yin Chen, Anupam Pandey, Seungho Kim, Sungyon Lee, Sunghwan Jung

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

In nature, high-speed raindrops often impact and spread on particulate surfaces (e.g., soil, plant leaves with spores or pollen). We study the dynamics of droplet impact on a loosely packed monolayer of particles by combining experimental and mathematical approaches. We find that the presence of mobile particles lowers the critical impact velocity at which the droplet exhibits corona splashing, as the particle area fraction is systematically increased. We rationalize this experimental observation by considering the jamming of frictional particles at the spreading rim. Elucidating the splashing transition of the drop on a particulate bed can lead to a better understanding of soil loss and erosion from falling raindrops.

Original language	English (US)
Article number	174103
Journal	Applied Physics Letters
Volume	119
Issue number	17
DOIs	https://doi.org/10.1063/5.0059466
State	Published - Oct 25 2021

Bibliographical note

Funding Information:
This work was supported by the National Science Foundation (NSF) under Grant No. CBET-1919753. This x-ray imagining used resources of the Advanced Photon Source led by Dr. Kamel Fezza and Dr. Tao Sun, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357.

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© 2021 Author(s).

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title = "Corona splashing triggered by a loose monolayer of particles",

abstract = "In nature, high-speed raindrops often impact and spread on particulate surfaces (e.g., soil, plant leaves with spores or pollen). We study the dynamics of droplet impact on a loosely packed monolayer of particles by combining experimental and mathematical approaches. We find that the presence of mobile particles lowers the critical impact velocity at which the droplet exhibits corona splashing, as the particle area fraction is systematically increased. We rationalize this experimental observation by considering the jamming of frictional particles at the spreading rim. Elucidating the splashing transition of the drop on a particulate bed can lead to a better understanding of soil loss and erosion from falling raindrops.",

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note = "Funding Information: This work was supported by the National Science Foundation (NSF) under Grant No. CBET-1919753. This x-ray imagining used resources of the Advanced Photon Source led by Dr. Kamel Fezza and Dr. Tao Sun, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Publisher Copyright: {\textcopyright} 2021 Author(s).",

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AU - Chen, Zih Yin

AU - Pandey, Anupam

AU - Kim, Seungho

AU - Lee, Sungyon

AU - Jung, Sunghwan

N1 - Funding Information: This work was supported by the National Science Foundation (NSF) under Grant No. CBET-1919753. This x-ray imagining used resources of the Advanced Photon Source led by Dr. Kamel Fezza and Dr. Tao Sun, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Publisher Copyright: © 2021 Author(s).

PY - 2021/10/25

Y1 - 2021/10/25

N2 - In nature, high-speed raindrops often impact and spread on particulate surfaces (e.g., soil, plant leaves with spores or pollen). We study the dynamics of droplet impact on a loosely packed monolayer of particles by combining experimental and mathematical approaches. We find that the presence of mobile particles lowers the critical impact velocity at which the droplet exhibits corona splashing, as the particle area fraction is systematically increased. We rationalize this experimental observation by considering the jamming of frictional particles at the spreading rim. Elucidating the splashing transition of the drop on a particulate bed can lead to a better understanding of soil loss and erosion from falling raindrops.

AB - In nature, high-speed raindrops often impact and spread on particulate surfaces (e.g., soil, plant leaves with spores or pollen). We study the dynamics of droplet impact on a loosely packed monolayer of particles by combining experimental and mathematical approaches. We find that the presence of mobile particles lowers the critical impact velocity at which the droplet exhibits corona splashing, as the particle area fraction is systematically increased. We rationalize this experimental observation by considering the jamming of frictional particles at the spreading rim. Elucidating the splashing transition of the drop on a particulate bed can lead to a better understanding of soil loss and erosion from falling raindrops.

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Corona splashing triggered by a loose monolayer of particles

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