I have no clue what any of this means, yet I laughed.
That man is gonna go through that pipe and become spaghetti
2137 (and a half)!
I don’t get it:
21 psi ~= 1.4 bar 15 feet ~= 4.5 mTo reach 1 bar pressure you need ~10m of water no?
Depends. They are probably meaning 0.4 bar greater than the pressure at the surface which is approximately 1 bar
To get one bar more than at the surface you need ten metres
What’s the formula for this?
F=Δp⋅A
I’ll never forget this video of a crab being sucked into a pipe being cut or this one of a diver in a similar situation.
Damn ._.
It’s harder to get that second link by people these days. Previews.
Also we know the URL by now
I click it voluntarily. Its a good song
an oldie but a goody
10/10 no notes
Physics is a cruel mistress.
Can someone please explain the reference to me?
guys ! don’t stick your butthole near the pool drain pipe
no matter how good you think it might feel on your butt.
Related reading: Guts, a short story by Chuck Palahniuk: https://theallfreenovel.com/21077/1/guts (nsfl)
Bro is about to be sucked into the opening and mangled to death then drown because of the flow / pressure / whatever
Delta-P
It would not let them go once attached but sucking through? If the hole is 10cm in diameter i would think it wouldn’t rip them apart.
But let’s physics this please!
Let’s do it:
The phenomenon that causes divers to be trapped is called differential pressure, or Delta P. It requires surprisingly little Delta P to trap divers in such a way that they can’t free themselves.
The formula is simple: F=Δp⋅A
Δp = Differential pressure, A = the area the differential pressure acts on, in our case the cross sectional area of the pipe.
Example:
30 cm pipe => A = π⋅(0,15)² m²
Delta P only (!!!) 0.1 bar (= 10 kPa).
F = 10,000 Pa ⋅ 0.07 m² ≈ 700 N. This equals roughly 71 kg of weight.
Now, let’s try this with the numbers above. Unfortunately, we don’t know the diameter of the pipe so let’s again assume 30 cm:
Δp = 21.375 - 14.7 psi = 6.675 psi ≈ 0.46 bar = 46 kPA
F = 46,000 Pa ⋅ 0.07 m² ≈ 3250 N.
=> You would be sucked to this pipe opening with a force of roughly 330 kg. In other words, you’re fucked.
For fun, let’s assume a 50 cm diameter pipe:
F = 46,000 Pa ⋅ 0.196 m² ≈ 9020 N.
This equals roughly 920 kg of weight.
=> There is absolutely no escape here and I think it’s safe to assume the diver would be sucked through that pipe.
And finally, to answer your question (I’ll skip the math here), a 10 cm diameter pipe would mean 37 kg of weight. I think it would be possible to escape in this scenario, but it’ll not be effortless.
i remember a greentext about this, and a wiki article, but where is it again? I thought it was the Norwegian oil platform disaster but no
there was some talk about how they got discombobulated and their bodies had gross dismemberment or something, being entirely suctioned through
edit: aha, found the article!
the causes:
- employees were overworked
- bad audio and noise caused miscommunication
- entry/exit door was unsafely designed
Colourful NSFW description ahead
Investigation by forensic pathologists determined that Hellevik, being exposed to the highest pressure gradient and in the process of moving to secure the inner door, was forced through the crescent-shaped opening measuring 60 centimetres long created by the jammed interior trunk door. With the escaping air and pressure, gross dismemberment ensued; it included bisection of his thoracoabdominal cavity, which resulted in fragmentation of his body, followed by expulsion of all of the internal organs of his chest and abdomen, except the trachea and a section of small intestine. These were projected some distance from the bell, with one section being found 10 metres vertically above the exterior pressure door.
Compression divers too
Delta P doesn’t care. Delta P doesn’t give a shit.
Don’t know about you, but I never take a shit without my Delta_P! Thanks Delta_P!
I hate “delta p” so much, as in the term. I’m convinced divers just used it so they could sound even more elitist and like astronauts when they’re just dudes with a few grand and nothing better to do. Erm, akshualy that isn’t a vacuum, that’s a device that’s creates delta p. P stands for pressure and delta is a scientific notation for change. Cool dude, now finish delta p-ing your fucking room.
Delta P isn’t a diving term. It’s an occupational safety term
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Static pressure on it’s own doesn’t really “do” anything though. You could have the thinest piece of solid material with 10 million atmospheres on either side and the material doesn’t care since forces cancel out. Difference in pressure is where shit goes pop or crush depending on the direction.
Divers frequently go to pressures of 500+ PSI without issues directly from the pressure
Nearly all the issues at that depth are from the physiology of breathing gasses at that pressure
That’s 34atm or about 330m. Nobody is diving that deep on a regular basis. It’s the world record.
This statement is incorrect. Pressure directly affects materials. Its just without pluging the hole with a part of your body you don’t actually feel the difference. In static 10 million atmospheres stuff like metal should show some measurable shrinkage. The larger the object, the more shrinkage you will measure.
Yes, you are technically right. Little too much hyperbole on my part, but the bulk modulus of solids in typically in the tens to hundreds of gigapascals
I’m convinced divers just used it so they could sound even more elitist and like astronauts when they’re just dudes with a few grand and nothing better to do.
Hey… Some of us just like blowing bubbles and hanging out with fish.
It is pretty fun, but to be honest not worth the money if you have to pay for the training yourself, especially if you don’t live near a good diving spot.
It is pretty fun, but to be honest not worth the money if you have to pay for the training yourself, especially if you don’t live near a good diving spot.
yeah, this is very true. I’d love diving tropical stuff every day but don’t want to live where it’s warm lol; where I live there are some crazy folks who drysuit dive all the time, but even then it’s waaaay too cold for me. I want the water warm but the rest nice and cool lol
I’m one of those crazy drysuit divers. I’m usually plenty warm on a dive, and seeing a pristine shipwreck at the bottom of the great lakes is pretty awesome
You made me delta p my pants.
I mean the dolphin story is gruesome. But for this diver to get a severe injury he must be very close to the hole, almost touching it.
The suction power is not that great in an underwater scenario.
What made the dolphin so gruesome is that it was an explosive decompression and besides the driver closest to the door no server dismemberment took place, only a very sudden decompression making for a very sudden yet horrid death.
If the diver in this diagram keeps a couple of centimeters away from the opening he is completely fine but if he manages to cover the outlet hole with some of his anatomy, the shit hits the fan.
Sooooo … Don’t put your dick in it, yeah?
How about a small cylinder? The cylinder must remain unharmed though
Just near it enough to get a little suction
In case you need some product advice: https://m.youtube.com/watch?v=6YHEK6-Ili8
Well it would make for quite the ‘out of body experience’. And if thats your kink I won’t shame it.
I would sort out your estate beforehand, if you catch my drift.
When it’s got ya… It’s got ya!
Let’s watch that video again, it’s been a couple of years again
Just like the Byford Dolphin
Jeeeeeyzus that was a read
One of todays unfortunate 10,000.
Actually very different.
Both involve pressure
The Challenger disaster and the Ford Pinto both involved vehicles bursting into flames.
Is that enough pressure differential to injure you? Get stuck yes but 6.5 PSI doesn’t seem that crazy.
Actually maybe. Imagine you got your back stuck on a 1 ft diameter pipe. That’s 735 lbs pushing on you.
Add the in the weight and speed of the water already moving through the pipe and the pressure on the other side becomes hugely negative.
You’re going in that pipe.
But I don’t want to go in the pipe
You get to experience the shift from physiology to physics today!
Shh, it’s easiest if you just go with it.
That hole may not have been made for you, but you WILL fit.
That’s what she said…
You’re still getting piped buddy
Rip to your homogenate or whatever, but I would simply avoid the pipe 😏
I wanted to respond with a funny delta P crab video, but if you search delta P on YouTube now you get a ton of AI generated shit, including a video where a guy sticks his have in a hole and it comes out with 6 fingers.
They’re all like 2 months old.
I don’t know why Google did this to themselves.
Found it for you! It’s as frightening as the first time I saw it…
Edit: Just saw that someone linked it further down three hours ago…
Here ya go. Not so much funny as sad.
You really don’t
Get in the pipe, Shinji.
My understanding is, this is a very common cause of death among divers. The pressure doesn’t kill you, but it gets you stuck long enough that you suffocate. Because even if safety teams are notified immediately, getting you out is difficult enough that they might not be able to get you out in time before you die
Soup like homogenate
Probably the closest thing to experiencing a black hole the average human being that is currently alive could ever encounter.
It depends on the actual cross sectional area of the space.
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Wait, where’s Saddam Hussein?
2137 spotted
I’m not sure if this is triggering either thalassophobia or submechanophobia but either way thanks I hate it
