Air entrapment under an impacting drop
ST Thoroddsen, TG Etoh, K Takehara�- Journal of Fluid Mechanics, 2003 - cambridge.org
When a drop impacts on a liquid surface it entraps a small amount of air under its centre as
the two liquid surfaces meet. The contact occurs along a ring enclosing a thin disk of air. We …
the two liquid surfaces meet. The contact occurs along a ring enclosing a thin disk of air. We …
High-speed imaging of drops and bubbles
ST Thoroddsen, TG Etoh, K Takehara�- Annu. Rev. Fluid Mech., 2008 - annualreviews.org
… Thoroddsen et al. (2005a) used the ISIS high-speed camera to look at the coalescence of air
bubbles in ethanol… drop coalescing with a pool of ethanol. Images show intensity difference …
bubbles in ethanol… drop coalescing with a pool of ethanol. Images show intensity difference …
The coalescence speed of a pendent and a sessile drop
ST Thoroddsen, K Takehara, TG Etoh�- Journal of Fluid Mechanics, 2005 - cambridge.org
When two liquid drops come into contact, they coalesce rapidly, owing to the large curvature
and unbalanced surface-tension forces in the neck region. We use an ultra-high-speed …
and unbalanced surface-tension forces in the neck region. We use an ultra-high-speed …
Micro-splashing by drop impacts
ST Thoroddsen, K Takehara, TG Etoh�- Journal of Fluid Mechanics, 2012 - cambridge.org
… THORODDSEN, ST 2002 The ejecta sheet generated by the impact of a drop. J. Fluid Mech.
… THORODDSEN, ST, THORAVAL, M.-J., TAKEHARA, K. & ETOH, TG 2011 Droplet splashing …
… THORODDSEN, ST, THORAVAL, M.-J., TAKEHARA, K. & ETOH, TG 2011 Droplet splashing …
On the coalescence speed of bubbles
ST Thoroddsen, TG Etoh, K Takehara, N Ootsuka�- Physics of Fluids, 2005 - pubs.aip.org
Two bubbles brought into contact will coalesce rapidly. We study experimentally the initial
coalescence motions in the neck region connecting the two bubbles, using an ultrahigh-speed …
coalescence motions in the neck region connecting the two bubbles, using an ultrahigh-speed …
Experiments on bubble pinch-off
ST Thoroddsen, TG Etoh, K Takehara�- Physics of Fluids, 2007 - pubs.aip.org
A bubble is slowly grown from a vertical nozzle until it becomes unstable and pinches off.
We use ultra-high-speed video imaging, at frame-rates up to 1 million fps, to study the …
We use ultra-high-speed video imaging, at frame-rates up to 1 million fps, to study the …
The air bubble entrapped under a drop impacting on a solid surface
ST Thoroddsen, TG Etoh, K Takehara…�- Journal of Fluid�…, 2005 - cambridge.org
We present experimental observations of the disk of air caught under a drop impacting onto
a solid surface. By imaging the impact through an acrylic plate with an ultra-high-speed …
a solid surface. By imaging the impact through an acrylic plate with an ultra-high-speed …
Spray and microjets produced by focusing a laser pulse into a hemispherical drop
ST Thoroddsen, K Takehara, TG Etoh, CD Ohl�- Physics of Fluids, 2009 - pubs.aip.org
… We also performed some disruption experiments with ethanol … due to the higher volatility of
ethanol. It is unlikely that plasma … combustion/detonation of ethanol vapor above the droplet …
ethanol. It is unlikely that plasma … combustion/detonation of ethanol vapor above the droplet …
Micro-bubble morphologies following drop impacts onto a pool surface
ST Thoroddsen, MJ Thoraval, K Takehara…�- Journal of fluid�…, 2012 - cambridge.org
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 …
and can delay direct contact. Herein we use ultra-high-speed video to study the rupture of this …
The initial coalescence of miscible drops
ST Thoroddsen, B Qian, TG Etoh, K Takehara�- Physics of Fluids, 2007 - pubs.aip.org
When two drops of different miscible liquids are brought into contact, their coalescence speed
is governed by the liquid having the weaker surface tension. Marangoni waves propagate …
is governed by the liquid having the weaker surface tension. Marangoni waves propagate …