Splashing phenomena during liquid droplet impact

Jie Liu, Henry Vu, Suk Goo Yoon, Richard A. Jepsen, Guillermo Aguilar

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Splashing is a phenomenon often observed during liquid droplet impact onto a solid surface. The threshold of splashing is known to be related to droplet size, impact velocity, and physical properties of the liquid, but the mechanisms that initiate splashing are not understood completely. In accordance with the Kelvin-Helmholtz (K-H) instability analysis, recent studies have shown that ambient gas density has a significant effect on the threshold and trajectory of splashing. In this study, the effects of droplet velocity, impact angle, and ambient gas pressure (or density) on the threshold of splashing and the motion of the ambient gas surrounding the droplet were examined. Experimental observations of splashing were carried out with a droplet of 1.7 mm in diameter, while varying droplet velocity, impact angle, and ambient pressure. An empirical correlation was derived using our and other published data to determine the threshold of splashing based on the aforementioned parameters. Also, a numerical simulation using the volume of fluid method was carried out to calculate the gas velocities surrounding the droplet during impact. The results of this model gave supportive evidence that K-H instability is a suitable instability theory that helps explain the splash phenomenon with consideration of the gas motion surrounding the droplet.

Original languageEnglish
Pages (from-to)297-310
Number of pages14
JournalAtomization and Sprays
Volume20
Issue number4
Publication statusPublished - 2010 Jun 7

Fingerprint

Liquids
Gases
Density of gases
Physical properties
Trajectories
Fluids
Computer simulation

Keywords

  • Droplet
  • Impact
  • Instability
  • Splash
  • Splash threshold

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Liu, J., Vu, H., Yoon, S. G., Jepsen, R. A., & Aguilar, G. (2010). Splashing phenomena during liquid droplet impact. Atomization and Sprays, 20(4), 297-310.

Splashing phenomena during liquid droplet impact. / Liu, Jie; Vu, Henry; Yoon, Suk Goo; Jepsen, Richard A.; Aguilar, Guillermo.

In: Atomization and Sprays, Vol. 20, No. 4, 07.06.2010, p. 297-310.

Research output: Contribution to journalArticle

Liu, J, Vu, H, Yoon, SG, Jepsen, RA & Aguilar, G 2010, 'Splashing phenomena during liquid droplet impact', Atomization and Sprays, vol. 20, no. 4, pp. 297-310.
Liu J, Vu H, Yoon SG, Jepsen RA, Aguilar G. Splashing phenomena during liquid droplet impact. Atomization and Sprays. 2010 Jun 7;20(4):297-310.
Liu, Jie ; Vu, Henry ; Yoon, Suk Goo ; Jepsen, Richard A. ; Aguilar, Guillermo. / Splashing phenomena during liquid droplet impact. In: Atomization and Sprays. 2010 ; Vol. 20, No. 4. pp. 297-310.
@article{9698bb7d15e6409c9388b924ed0bbc81,
title = "Splashing phenomena during liquid droplet impact",
abstract = "Splashing is a phenomenon often observed during liquid droplet impact onto a solid surface. The threshold of splashing is known to be related to droplet size, impact velocity, and physical properties of the liquid, but the mechanisms that initiate splashing are not understood completely. In accordance with the Kelvin-Helmholtz (K-H) instability analysis, recent studies have shown that ambient gas density has a significant effect on the threshold and trajectory of splashing. In this study, the effects of droplet velocity, impact angle, and ambient gas pressure (or density) on the threshold of splashing and the motion of the ambient gas surrounding the droplet were examined. Experimental observations of splashing were carried out with a droplet of 1.7 mm in diameter, while varying droplet velocity, impact angle, and ambient pressure. An empirical correlation was derived using our and other published data to determine the threshold of splashing based on the aforementioned parameters. Also, a numerical simulation using the volume of fluid method was carried out to calculate the gas velocities surrounding the droplet during impact. The results of this model gave supportive evidence that K-H instability is a suitable instability theory that helps explain the splash phenomenon with consideration of the gas motion surrounding the droplet.",
keywords = "Droplet, Impact, Instability, Splash, Splash threshold",
author = "Jie Liu and Henry Vu and Yoon, {Suk Goo} and Jepsen, {Richard A.} and Guillermo Aguilar",
year = "2010",
month = "6",
day = "7",
language = "English",
volume = "20",
pages = "297--310",
journal = "Atomization and Sprays",
issn = "1044-5110",
publisher = "Begell House Inc.",
number = "4",

}

TY - JOUR

T1 - Splashing phenomena during liquid droplet impact

AU - Liu, Jie

AU - Vu, Henry

AU - Yoon, Suk Goo

AU - Jepsen, Richard A.

AU - Aguilar, Guillermo

PY - 2010/6/7

Y1 - 2010/6/7

N2 - Splashing is a phenomenon often observed during liquid droplet impact onto a solid surface. The threshold of splashing is known to be related to droplet size, impact velocity, and physical properties of the liquid, but the mechanisms that initiate splashing are not understood completely. In accordance with the Kelvin-Helmholtz (K-H) instability analysis, recent studies have shown that ambient gas density has a significant effect on the threshold and trajectory of splashing. In this study, the effects of droplet velocity, impact angle, and ambient gas pressure (or density) on the threshold of splashing and the motion of the ambient gas surrounding the droplet were examined. Experimental observations of splashing were carried out with a droplet of 1.7 mm in diameter, while varying droplet velocity, impact angle, and ambient pressure. An empirical correlation was derived using our and other published data to determine the threshold of splashing based on the aforementioned parameters. Also, a numerical simulation using the volume of fluid method was carried out to calculate the gas velocities surrounding the droplet during impact. The results of this model gave supportive evidence that K-H instability is a suitable instability theory that helps explain the splash phenomenon with consideration of the gas motion surrounding the droplet.

AB - Splashing is a phenomenon often observed during liquid droplet impact onto a solid surface. The threshold of splashing is known to be related to droplet size, impact velocity, and physical properties of the liquid, but the mechanisms that initiate splashing are not understood completely. In accordance with the Kelvin-Helmholtz (K-H) instability analysis, recent studies have shown that ambient gas density has a significant effect on the threshold and trajectory of splashing. In this study, the effects of droplet velocity, impact angle, and ambient gas pressure (or density) on the threshold of splashing and the motion of the ambient gas surrounding the droplet were examined. Experimental observations of splashing were carried out with a droplet of 1.7 mm in diameter, while varying droplet velocity, impact angle, and ambient pressure. An empirical correlation was derived using our and other published data to determine the threshold of splashing based on the aforementioned parameters. Also, a numerical simulation using the volume of fluid method was carried out to calculate the gas velocities surrounding the droplet during impact. The results of this model gave supportive evidence that K-H instability is a suitable instability theory that helps explain the splash phenomenon with consideration of the gas motion surrounding the droplet.

KW - Droplet

KW - Impact

KW - Instability

KW - Splash

KW - Splash threshold

UR - http://www.scopus.com/inward/record.url?scp=77952975714&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77952975714&partnerID=8YFLogxK

M3 - Article

VL - 20

SP - 297

EP - 310

JO - Atomization and Sprays

JF - Atomization and Sprays

SN - 1044-5110

IS - 4

ER -