The destabilization of an initially thick liquid sheet edge

Lhuissier, Henri; Villermaux, Emmanuel

doi:10.1063/1.3644840

Cited by 22 publications

(27 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This timescale is identical to that of the Rayleigh-Plateau instability, as already observed for liquid sheet edges in a different context by Lhuissier & Villermaux (2011). Figure 10 shows that (5.1) is in excellent agreement with the experimental data with a prefactor of 1.1.…”

Section: (B)supporting

confidence: 84%

Drop fragmentation by laser-pulse impact

et al. 2020

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: (B)supporting

confidence: 84%

Drop fragmentation by laser-pulse impact

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…Here σ is the surface tension, ρ the liquid density, and δ the air sheet thickness. This is essentially the same as for liquid sheets in air [11][12][13][14][15][16][17]. By using this result and assuming that the disk remains of uniform but growing thickness δ(t) during the contraction, it is found that the radius of the air disk R(t) reduces exponentially in time [3,4] …”

mentioning

confidence: 50%

Contraction of an air disk caught between two different liquids

Thoraval

Thoroddsen

2013

Phys. Rev. E

View full text Add to dashboard Cite

When a drop impacts a pool of liquid it entraps a thin disk of air under its center. This disk contracts rapidly into a bubble to minimize surface energy. Herein we use ultra-high-speed imaging to measure the contraction speed of this disk when the drop and pool are of different liquids. For miscible liquids the contraction rate is governed by the weaker of the two surface tensions. Some undulations are observed on the edge of the disk for a water drop impacting a pool of water, but not on a pool of lower surface tension. Similar results are observed for a pair of immiscible liquids.

show abstract

“…When viscous effects can be neglected, the velocity of the edge can be estimated by the Taylor-Culick velocity u σ = √ 2σ/(ρδ): see Oguz & Prosperetti (1989), Brenner & Gueyffier (1999), Song & Tryggvason (1999), Lhuissier & Villermaux (2011) and Gordillo et al (2011). This approximation is valid for films thicker than δ = 2µ 2 /(ρσ ).…”

Section: Film Thickness and Speed Of Rupturementioning

confidence: 99%

Micro-bubble morphologies following drop impacts onto a pool surface

et al. 2012

View full text Add to dashboard Cite

When a drop impacts at low velocity onto a pool surface, a hemispheric air layer cushions and can delay direct contact. Herein we use ultra-high-speed video to study the rupture of this layer, to explain the resulting variety of observed distribution of bubbles. The size and distribution of micro-bubbles is determined by the number and location of the primary punctures. Isolated holes lead to the formation of bubble necklaces when the edges of two growing holes meet, whereas bubble nets are produced by regular shedding of micro-bubbles from a sawtooth edge instability. For the most viscous liquids the air film contracts more rapidly than the capillary–viscous velocity through repeated spontaneous ruptures of the edge. From the speed of hole opening and the total volume of micro-bubbles we conclude that the air sheet ruptures when its thickness approaches ${\ensuremath{\sim} }100~\mathrm{nm} $.

show abstract

The destabilization of an initially thick liquid sheet edge

Cited by 22 publications

References 21 publications

Drop fragmentation by laser-pulse impact

Drop fragmentation by laser-pulse impact

Contraction of an air disk caught between two different liquids

Micro-bubble morphologies following drop impacts onto a pool surface

Contact Info

Product

Resources

About