The Inner World of a Collapsing Bubble
HTML-код
- Опубликовано: 24 ноя 2014
- 2014 APS/DFD Gallery of Fluid Motion Award Winner
Detailed high-speed visualizations present the complex dynamics within a bubble collapsing in the vicinity of a free surface.
Authors:
Outi Supponen,
Ecole Polytechnique Federale de Lausanne
Philippe Kobel,
Ecole Polytechnique Federale de Lausanne
Mohamed Farhat,
Ecole Polytechnique Federale de Lausanne
dx.doi.org/10.1103/APS.DFD.201...
See more videos in the 2014 APS/DFD Gallery of Fluid Motion gfm.aps.org/meetings/dfd-2014/ 
Наука
The observed shockwaves are especially impressive.
Here because of the Titan implosion but reminded why Fluid Dynamics was one of my favorite classes in undergrad
Wow, this is really cool to watch!
Wow. Learning about ultrasonic cleaners. I was stuck on cavitation. Now, I can see it.
Looks like a microburst, I wonder if bubbles of moist air collapse against the stratosphere, creating the downward jet?
Interesting idea, but I wonder considering macro vs. micro phenomena etc.
Bubbles collapse into violent shockwave-indicing events and stars collapse into black holes. It seems collapse is very common in nature.
Aaron VanAlstine it really is amazing how at least two things are unstable
Do you have a version that is deeper, an not near the surface?
I would bet this keeps the bubble in viewing vicinity.
Do we have an audio file of what this sounds like? Thanks
It was inaudible.
@@MarcosElMalo2 thank you
Can any one say why bubble initially expands and sudden compression???
It’s at 0:08 “A cavitation bubble is created with a focused laser pulse in the vicinity of a free surface.”
At 0:30 “Before reaching its minimum radius, the bubble is pierced by a free surface-induced jet.” (That is, the jet is induced by proximity to the free surface.)
@@MarcosElMalo2
Thank you so much sir, now it is clear
Ring bubbles into ring bubbles = minijets.