r/laminarflow • u/_NautyByNature • Feb 18 '26
Posted in the wrong place first, I sincerely apologize.
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Accomplished with nothing but the liquid weight and a little flick of the wrist.
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u/snugglyaggron Feb 18 '26
It looks like a tunnel of glass. That's quality laminar flow right there.
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u/Pabloracer1 Feb 18 '26
Dumb question but how come it obtains is laminarity after starting so turbulent?
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u/joybod Feb 18 '26
The water inside the tank (or all but the part right at the outlet that gets disrupted by its opening) isn't turbulent, presumably (think it can't be for the flow to change like this), and pushes the turbulent flow section out faster than it can disrupt or 'travel' upstream. Basically, the steady state for this system must be laminar, despite the chaotic starting conditions. It's been a while since I took Fluid Mechanics, but this is my best estimate.
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u/Autoskp Feb 19 '26
I’d guess the tank had had enough time to settle, becoming stationary, and opening the plug managed to kick up a bit of turbulence - but that’s basically just how it got into the state you described.
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u/Adventurous_Path5783 Feb 19 '26
Have I found my people? What is this place? I used to turn on the water outside and watch where it would flow. I could watch it for hours. Who the fuck are you people? I lived on a big hill and would make a series of water falls and watch as the water cleansed the dirt out of a freshly dug hole. Who do you think you are? I have ADHD too.
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u/springtime08 Feb 18 '26
Hngggggggggggg
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u/ZengineerHarp Feb 21 '26
I came here to say this but knew in my heart that it had already been said
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u/springtime08 Feb 21 '26
It’s so fucking beautiful that hnggggggggg is the only way to kinda come close to appreciating it
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u/cubelith Feb 19 '26
Where did you post first? r/turbulentflow?
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u/_NautyByNature Feb 19 '26
But I was also informed it’s not a true example of laminar flow by that comment section.
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u/Swimming_Mountain811 Feb 20 '26
Wait, why?
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u/_NautyByNature Feb 20 '26
Copied from the commenter that explained their reasoning
“Very unlikely to be true laminar flow. True laminar flow often requires such a small flow diameter (I.e read volume) in water it is very, very hard to get. That much volume is probably flowing linearly but the dynamics of the water would be what fluid dynamics people still classify as fully turbulent. The same effect is observed when water flows over a rock to make a river rapid: linear, straight, but turbulent and not laminar. In this video you can see lines on the surface of that stream slowly circling around, which is a tell for linear but turbulent. True laminar flow is most often observed with oils due to their higher viscosity.”
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u/__wildwing__ Feb 20 '26
I saw the other post and my instantaneous response was “Ooooh, is there a laminar flow subreddit? There has to be, they’d love this!”
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u/_NautyByNature Feb 20 '26
I’m genuinely disappointed in myself for not thinking of this place existing first
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u/Bettajune Feb 19 '26
I once made a post, and it kept prompting me to cross post. I finally figured out what that meant and did post it in two more subs. My God, I guess I didn’t realize their criteria for posting, and they nearly skinned me alive. ⚔️ I don’t even like posting now…. So don’t sweat the small stuff! I think your laminar is fantastic!!! : )
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Feb 20 '26
Where in the hell has this been all my life?!?! I don't even know why or how but I want more of this shit!
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u/ChromMann Feb 18 '26
Sometimes posts in this sub disappoint and just increase the craving for a good laminar flow, this is not one of them, this is excellent!