Armored interfaces refer to fluid interfaces on which a compact monolayer of particles is adsorbed. In this paper, we probe their robustness under impact. For such an investigation, the impact of a drop (covered or not by particles) on a flat armored interface is considered. Two regimes are observed: small drops impacting at low velocities do not coalesce, while bigger drops falling at higher velocities lead to coalescence. The coalescence which occurs when the impacting drop has just reached its maximum extension directly results from the formation of bare regions within the armor. We therefore propose a geometric criterion to describe this transition. This simple modeling is able to capture the dependence of the measured velocity threshold with particle size and drop diameter. The additional robustness experienced by double armors (both drop and puddle covered) results in an increase of the measured velocity threshold, which is quantitatively predicted.
Skip Nav Destination
Article navigation
April 2013
Research Article|
April 23 2013
Coalescence of armored interface under impact
C. Planchette;
C. Planchette
1LPMDI,
Université Paris-Est Marne-La-Vallée
, FRE3300 CNRS, 5 Bd Descartes, 77454 Marne-la-Vallée, France
2
Research Center Pharmaceutical Engineering
, Inffeldgasse 13, A-8010 Graz, Austria
Search for other works by this author on:
A.-L. Biance;
A.-L. Biance
3Institut Lumière Matière,
Université de Lyon
, UMR5306 Université Lyon 1-CNRS, 69622 Villeurbanne, France
Search for other works by this author on:
O. Pitois;
O. Pitois
4Laboratoire Navier,
Université Paris-Est
, UMR8205 CNRS-ENPC-IFSTTAR, 2 allée Kepler, 77420 Champs-sur-Marne, France
Search for other works by this author on:
E. Lorenceau
E. Lorenceau
4Laboratoire Navier,
Université Paris-Est
, UMR8205 CNRS-ENPC-IFSTTAR, 2 allée Kepler, 77420 Champs-sur-Marne, France
Search for other works by this author on:
Physics of Fluids 25, 042104 (2013)
Article history
Received:
May 15 2012
Accepted:
March 19 2013
Citation
C. Planchette, A.-L. Biance, O. Pitois, E. Lorenceau; Coalescence of armored interface under impact. Physics of Fluids 1 April 2013; 25 (4): 042104. https://doi.org/10.1063/1.4801320
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
On Oreology, the fracture and flow of “milk's favorite cookie®”
Crystal E. Owens, Max R. Fan (范瑞), et al.
Physics-informed neural networks for solving Reynolds-averaged Navier–Stokes equations
Hamidreza Eivazi, Mojtaba Tahani, et al.
Chinese Academy of Science Journal Ranking System (2015–2023)
Cruz Y. Li (李雨桐), 李雨桐, et al.
Related Content
Capillary breakup of armored liquid filaments
Physics of Fluids (June 2017)
Gravity driven current during the coalescence of two sessile drops
Physics of Fluids (February 2015)
Probing the coalescence of non-Newtonian droplets on a substrate
Physics of Fluids (March 2022)
Modeling the coalescence of sessile droplets
Biomicrofluidics (June 2009)
Coalescence of liquid drops: Different models versus experiment
Physics of Fluids (December 2012)