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Single-drop impingement onto a wavy liquid film and description of the asymmetrical cavity dynamics

Van Hinsberg, Nils Paul and Charbonneau-Grandmaison, Marie (2015) Single-drop impingement onto a wavy liquid film and description of the asymmetrical cavity dynamics. Physical Review E (92), 013004-1. American Physical Society. doi: 10.1103/PhysRevE.92.013004. ISSN 2470-0045.

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Official URL: http://journals.aps.org/pre/abstract/10.1103/PhysRevE.92.013004


The present paper is devoted to an experimental investigation of the cavity formed upon a single-drop impingement onto a traveling solitary surface wave on a deep pool of the same liquid. The dynamics of the cavity throughout its complete expansion and receding phase are analyzed using high-speed shadowgraphy and compared to the outcomes of drop impingements onto steady liquid surface films having equal thickness. The effects of the surface wave velocity, amplitude and phase, drop impingement velocity, and liquid viscosity on the cavity's diameter and depth evolution are accurately characterized at various time instants. The wave velocity induces a distinct and in time increasing inclination of the cavity in the wave propagation direction. In particular for strong waves an asymmetrical distribution of the radial expansion and retraction velocity along the cavity's circumference is observed. A linear dependency between the absolute Weber number and the typical length and time scales associated with the cavity's maximum depth and maximum diameter is reported.

Item URL in elib:https://elib.dlr.de/97116/
Document Type:Article
Title:Single-drop impingement onto a wavy liquid film and description of the asymmetrical cavity dynamics
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Van Hinsberg, Nils Paulnils.vanhinsberg (at) dlr.deUNSPECIFIED
Charbonneau-Grandmaison, MarieETH ZürichUNSPECIFIED
Date:6 July 2015
Journal or Publication Title:Physical Review E
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1103/PhysRevE.92.013004
Page Range:013004-1
Publisher:American Physical Society
Keywords:Drop impact; Cavity dynamics; Liquid film; Surface wave
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flexible Aircraft (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Aeroelastic Experiments
Deposited By: van Hinsberg, Dr. Ir. Nils
Deposited On:05 Aug 2015 13:55
Last Modified:17 Mar 2021 13:40

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