Year: 2020
Type: article
Abstract: We study the fragmentation of a liquid drop that is hit by a laser pulse. The drop expands into a thin sheet that breaks by the radial expulsion of ligaments from its rim and the nucleation and growth of holes on the sheet. By combining experimental data from two liquid systems with vastly different time and length scales, we show how the early-time laser–matter interaction affects the late-time fragmentation. We identify two Rayleigh–Taylor instabilities of different origins as the prime cause of the fragmentation and derive scaling laws for the characteristic breakup time and wavenumber. The final web of ligaments results from a subtle interplay between these instabilities and deterministic modulations of the local sheet thickness, which originate from the drop deformation dynamics and spatial variations in the laser-beam profile.
Source: Journal of Fluid Mechanics
DOI: 10.1017/jfm.2020.197
Authors: Alexander L. Klein, Dmitry Kurilovich, Henri Lhuissier, Oscar O. Versolato, Detlef Lohse, Emmanuel Villermaux, Hanneke Gelderblom
Institutions: Max Planck University of Twente Center for Complex Fluid Dynamics, University of Twente, Advanced Research Center for Nanolithography (Netherlands), Vrije Universiteit Amsterdam, Centre National de la Recherche Scientifique, Aix-Marseille Université, Institut Universitaire des Systèmes Thermiques Industriels, Institut Universitaire de France, Institut de Recherche sur les Phénomènes Hors Équilibre, Centrale Méditerranée, Eindhoven University of Technology
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,160
OpenAlex ID: W2978477607