Vortex Breakdown
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- Опубликовано: 26 сен 2024
- FERGUL - Fluids Engineering Research Group at the University of Liverpool.
The video shows the development of vortex breakdown in a swirling pipe flow. The experiment consists of two smoothly joined pipe sections that can be rotated independently about the same axis. In this clip, the pipe on the left hand side of the video is rotating whilst the pipe on the right hand side remains stationary. The flowrate through the pipe remains fixed (giving a Reynolds number of 25 based on the average velocity and pipe diameter) whilst the rotational speed of the left pipe is slowly increased. Once the swirl imparted to the flow goes above a critical value then flow reversal - so-called "vortex breakdown" occurs. For full details see
D. J. C. Dennis, C. Seraudie and R. J. Poole "Controlling vortex breakdown in swirling pipe flows: Experiments and simulations". Phys. Fluids 26, 053602 (2014)
dx.doi.org/10.1...
Super helpful demonstration. It's difficult to visualize what is happening from just reading theory. Thank you!
Great! The best visualisation for understanding this principle! Better than 10.000 words :-D
Перевод:
"На видео показано развитие вихревого пробоя в закрученном потоке трубы. Эксперимент состоит из двух плавно соединенных секций труб, которые могут вращаться независимо друг от друга вокруг одной оси. В этом клипе труба на левой стороне видео вращается, в то время как труба на правой стороне остается неподвижной. Расход через трубу остается фиксированным (что дает число Рейнольдса 25, основанное на средней скорости и диаметре трубы), в то время как скорость вращения левой трубы медленно увеличивается. Как только вихрь, сообщенный потоку, поднимается выше критического значения, происходит реверс потока - так называемый "вихревой пробой" (Vortex Breakdown)."
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Простым русским сани-языком:
Процесс перераспределения энергии (вращения) происходит через поперечные тороидальные образования.
Хороший наглядный пример формирования ЭМ тора (на границе сред-частот) при взаимодействии разночастотных ЭС вихрей.
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That was flowtally awesome! 👍
To DYE for even
@@ActivistVictor Don’t you mean, to dye vor?
spinning creates the standing wave, helical shape.
Who came here from Reddit?
stunning work - great job, liverpool!
Fantastic, would it be possible to make a video with the 2 sections counter-rotating?
it would technically be the same if 1 was rotating 2x as fast
@@_miobrot_603Lets not jump to conclusions here
You should try the experiment with only the left hand tube, going into an open pool, not another tube...I believe you will see something different :)
Do you have more information about this experiment?
This is really cool, thanks for sharing! Just curious if you have videos or recommendations on this subject in relation to our hearts, and how these currents flow through our bodies? I see so many conflicting Torus field videos these days that seem to hint at the truth, but not quite getting it in my view at least. Random note- I noticed I have two opposing spirals embedded in my chest hair on each side of the heart, so it seems like the heart causes the electromagnetic currents to flow like a fluid, much like this. Would love some input if possible, thanks again :)
lovely
Can you please specify the RPM range of this experiment?
Awesome!
Why the right hand side pipe is stationary? If it is rotating at the same speed, won't there be any breakdown?
spinny thing go vroooom
Awesome, I like the waveform it makes and makes me wonder if light twists a constant flow of time like the tube does with a constant flow of fluid. Like a wave/particle duality analog sort of, be cool if this could explain why light doesn't really move through space/time like everything else?
Thank you! Great work. :-)
Hi there, may I ask which kind of dye you use?
How were u able to turn only 1 pipe while keeping the other one stationary im really curious
hole in middle maybe
fine
Super!!!!
It look like an rose
would spinning mercury in a 360 degree ball with two mangnetic vortices cause a change in gravity
Belicimo
Tornado
How did it not mix?
Who came here from Reddit?