Cited by 753Fluid Dynamics and Heat TransferElectrohydrodynamics and Fluid DynamicsFluid Dynamics and Thin Films

Coalescence and separation in binary collisions of liquid drops

Ashgriz, N., Poo, J. Y.·1990·Journal of Fluid Mechanics

Abstract

An extensive experimental investigation of the binary collision dynamics of water drops for size ratios of 1. 0.75, and 0.5, for the Weber-number range of 1 to 100, and for all impact parameters is reported. Two different types of separating collisions, namely reflexive and stretching separations, are identified. Reflexive separation is found to occur for near head-on collisions, while stretching separation occurs for large-impact-parameter collisions. The boundaries between both of the separating collisions and coalescence collision are found experimentally. Theoretical models for predictions of the reflexive and stretching separation are also given.

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Registry

Crossref · 10.1017/s0022112090003536

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24 of 24 references verified0 citation errors · 0 not checkable

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  • Increasing the size ratio Δ promotes droplet coalescence but still leads to bouncing and separation.

    “Although increasing Δ promotes droplet coalescence, 18,19,21 it still leads to bouncing and separation, as shown in the representative experimental images.”

    From Droplet collision of hypergolic propellants (2024) · cites this paper as [18]

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Authors
Ashgriz, N., & Poo, J. Y.
Affiliations
University at Buffalo, State University of New York (US)
Venue
Journal of Fluid Mechanics
Published
1990-12
Volume
221
Pages
183-204
ISSN
  • 0022-1120 (ISSN-L)
  • 1469-7645
OpenAlex
W2017794846
Cited by
753
References
24
Citations by year
2026: 34 · 2025: 38 · 2024: 31 · 2023: 43 · 2022: 46 · 2021: 37 · 2020: 37 · 2019: 36 · 2018: 28 · 2017: 45 · 2016: 24 · 2015: 30 · 2014: 18 · 2013: 23 · 2012: 31
FWCI
2.02
Type
journal article
Language
en
Open access
closed
Locations
Journal of Fluid Mechanics (publishedVersion)
Topics
  • Physical Sciences › Engineering › Computational Mechanics › Fluid Dynamics and Heat Transfer
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrohydrodynamics and Fluid Dynamics
  • Physical Sciences › Engineering › Computational Mechanics › Fluid Dynamics and Thin Films
Keywords
droplet coalescence, drop separation, water droplets, impact parameter, Weber number, collision dynamics, size ratio

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