The behavior of the gas film formed upon drop impact with a liquid surface

Sigler, James D.; Mesler, Russell B.

doi:10.1016/0021-9797(90)90156-i

Cited by 41 publications

(46 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The edge moves much more rapidly up away from the ruptures, again suggesting a significantly thinner air layer along the sides. Similar formation of multiple holes along a ring may explain the bubble chandeliers observed in water (Sigler & Mesler 1990;Liow & Cole 2007;Mills et al 2012). Thoroddsen, M.-J.…”

Section: Bubble Morphology: Hanging Necklaces and Bubble Chandeliersmentioning

confidence: 82%

See 1 more Smart Citation

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

Section: Bubble Morphology: Hanging Necklaces and Bubble Chandeliersmentioning

confidence: 82%

“…The details of this rupture are unknown, principally due to the very rapid capillary-driven motions. Mesler and co-workers (Esmailizadeh & Mesler 1986;Sigler & Mesler 1990) presented a series of papers showing snapshots of bubble structures for water, without time-resolved imaging. 470 S. T. Thoroddsen, M.-J.…”

Section: Introductionmentioning

confidence: 99%

Micro-bubble morphologies following drop impacts onto a pool surface

et al. 2012

View full text Add to dashboard Cite

show abstract

“…For slightly larger impact velocities (figure 3b), the air hemisphere ruptures at numerous holes, which grow in size and leave streams of microbubbles where they meet. This is the so-called Mesler entrainment (Sigler & Mesler 1990;Mills et al 2012;Thoroddsen et al 2012). For still larger impact velocity, we show, in figure 3(c), the early breakup of the air layer which entraps a central air disc, a problem extensively studied for higher impact velocities (Thoroddsen et al 2003).…”

Section: Overall Parameter Regimesmentioning

confidence: 93%

“…Beilharz and others frequently named Mesler entrainment (Sigler & Mesler 1990). Mills, Saylor & Testik (2012) showed that the breakup of this air layer is inherently random for water, while Saylor & Bounds (2012) demonstrated that the thin air films are much more stable for some other liquids, such as silicone oils and ethanol (Sundberg-Anderson & Saylor 2014).…”

mentioning

confidence: 99%

Antibubbles and fine cylindrical sheets of air

Beilharz

Guyon

et al. 2015

J. Fluid Mech.

View full text Add to dashboard Cite

Drops impacting at low velocities onto a pool surface can stretch out thin hemispherical sheets of air between the drop and the pool. These air sheets can remain intact until they reach submicron thicknesses, at which point they rupture to form a myriad of microbubbles. By impacting a higher-viscosity drop onto a lower-viscosity pool, we have explored new geometries of such air films. In this way we are able to maintain stable air layers which can wrap around the entire drop to form repeatable antibubbles, i.e. spherical air layers bounded by inner and outer liquid masses. Furthermore, for the most viscous drops they enter the pool trailing a viscous thread reaching all the way to the pinch-off nozzle. The air sheet can also wrap around this thread and remain stable over an extended period of time to form a cylindrical air sheet. We study the parameter regime where these structures appear and their subsequent breakup. The stability of these thin cylindrical air sheets is inconsistent with inviscid stability theory, suggesting stabilization by lubrication forces within the submicron air layer. We use interferometry to measure the air-layer thickness versus depth along the cylindrical air sheet and around the drop. The air film is thickest above the equator of the drop, but thinner below the drop and up along the air cylinder. Based on microbubble volumes, the thickness of the cylindrical air layer becomes less than 100 nm before it ruptures.

show abstract

“…Such breakup of ten leaves behind a large number of small bubbles and goes by the name of Mesler entrainment (17)(18)(19) . This configuration is challenging for interferometry due to the large curvature of the free surface (20) .…”

Section: Breakup Of Thin Air Films Around a Drop Impacting A Deep Poolmentioning

confidence: 99%