Some of the media coverage about APS in November 2009: On Feb 2, 2010, the poster we presented at APS was highlighted in National Geographic. BYU also highlighted our submissions for APS in an article on their homepage. Kate Arneman wrote a full page introduction to the annual APS-DFD Gallery of Fluid Motion, entitled Fluid Fantastica, which was [...]
I was very excited to visit the set of Time Warp last April and talk about the work I did as a PhD student. I haven’t posted the event until now because I thought it would be better to post a clip from the show. I tried to get the producer to send me free [...]
On TV: Tadd Truscott and Alex Techet show how bullets can enter the water on the Discovery Channel “Time Warp” starting Wednesday Nov. 19th 8:30 pm Episode: Breakdancing (11/2008).
Previous studies have shown that applying a hydrophobic coating to one-half of a hydrophilic sphere will cause asymmetric cavity formation and a deflection in the trajectory of a sphere. Half of an axisymmetric projectile will be coated with the hydrophobic coating and dropped in a similar manner to determine if there is similar asymmetric cavity [...]
When the conditions are right, a solid sphere can pass through a soap bubble without rupturing the soap film. As the sphere passes through the soap film, a pinch-off occurs and the soap film reseals itself. Predicting whether or not a soap film will rupture is dependent upon the speed [...]
From Dynamics of Water Entry by Tadd T. Truscott, Jeffrey M. Aristoff, Alexandra H. Techet & John Bush, Massachusetts Institute of Technology. The videos illustrate the hydrodynamics associated with water-entry of spheres, which can be highly variable with respect to their material and kinematic properties. The first video, contrasts the nature of impact between a [...]
The patterns formed by droplets falling through a different liquid was studied over a century ago. We perform similar experiments here, whereby droplets of naphthenic oil approximately 3 mm in diameter are released from several heights into a container filled with isopropyl alcohol. The oil is denser than and miscible in the alcohol, which results [...]
When a hollow, elastic ball has been partially filled with a fluid, the rebound after being dropped is suppressed quite substantially. This principle helps a roller hockey ball to remain on the ground rather than bounce during play. Future research may lead to other other applications such as passive damping systems based on sloshing liquids. In the video below, [...]
We utilize the synthetic aperture particle image velocimetry technique to visualize the air flow past an artificial vocal fold. The video explains the technique in more detail and highlights the jets formed in the wake of the vocal folds. The air passes through two silicone molds representing the vocal muscles inside the thorax. As [...]
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