What is a Hydraulic Jump?

[@roccoliuzzi8394]

I'm a contractor. My current job is replacing a hot tub built into a basement remodel thirty years ago. With no room to bring in a new hot tub I suggested a whirlpool bath, an idea the client accepted. The biggest problem was that the hot tub had no drain, water was pumped into the adjacent shower pan when it needed to be refreshed. To overcome this I built a platform with the drain running between it and the concrete floor, through the shower wall, over the top of the existing shower pan. I was worried about water velocity because of the 20" head pressure. The drain leaves the tub with 1.5" PVC into a trap then travels at a gentle slope, 1/2" in four feet. As it enters the wall it steps up to 2" then flows out of a 3" shower pan drain with grill that is acting in reverse, water coming out horizontally instead of entering vertically. The volume is very impressive as is the sound. It is dispersed enough that it does not splash excessively, I think the grill helps a lot. I was quite pleased. Here is what I did not expect. The flow from the 1.5" pipe overwhelms the 2" shower drain. Water depth in the pan gradually increases to about 3", near overflow. Then the most remarkable phenomenon and the reason I write. A tremendous whirlpool is created at the drain, 3" deep 2" diameter. No water goes down the center of the drain. By coincidence I am reading a book "The Science of Leonardo". He would have loved it. With the ceiling light of the shower shining through the turbulence the patterns are stable and clear. I will cut a rubber washer to insert under the "popup" to reduce the flow. I think that will do the trick. We'll see. Thanks for your excellent videos.

[@Illevas001]

It would actually be cool to see a video of this if you managed to record one.

[@ChevisPreston]

This channel is absolutely fantastic. I know a lot of what you go over, especially with fluid-dynamics, but you always have some little known information. My favorite was the concrete episode. Keep it up man!

[@USSAnimeNCC-]

When I found this channel I was binge watching his video it one of the best educational channel out their

[@pererau]

I know nothing about any of this, but still find it super fascinating!

[@justussneary19]

pererau Same here

[@TwisterKidMedia]

We also observe hydraulic jumps in atmospheric science. They often happen downstream of mountain rages when mountain waves break. Super critical flow trapped above an inversion layer can transition to sub critical and cause deep mixing of the boundary layer. This mixing transports high winds to the surface in addition to the turbulence being induced by the terrain. This can lead to intense downslope windstorms also called chinook or fohn winds. Where I work in Wyoming, we often see wave breaks and hydraulic jumps produce damaging wind gusts over 100 mph.

[@trucid2]

How is sub and supercritical flow defined for air?

[@TwisterKidMedia]

@@trucid2 essentially the same way as explained through here. Air is a fluid so it behaves the same as water or other fluids but with different viscosity.

[@trucid2]

@@TwisterKidMedia He defined it in terms of wave speed. How would that work for air?

[@jkbecker]

@@trucid2 Never heard of supersonic storms before? 😂

[@feynstein1004]

@trucid2 Wave speed is just the speed at which a longitudinal wave (such as sound) travels through a fluid. This speed is generally constant for a fluid. What changes is the speed at which the fluid itself is flowing. So if air were moving very quickly at a place and then coming to an abrupt halt, that place would have a hydraulic jump of air.

[@CBOYDRUN]

Absolutely one of the best channels on KZbin!

[@reynal_omnicide9217]

remember to like and comment to help with the internal algorithm and help grow his channel :P

[@imoneoldfart6804]

well one of the best engineering channels.

[@SpikeWheelGaming]

Practical Engineering and Smarter Everyday are my two favorite mind engaging channels. It doesn't get any better than these😃

[@Kansasavation]

Practical engineering and mark Rober are some of my favorite KZbinrs

[@atlas_1802]

@@Kansasavation me too! I’m very interested in engineering, architecture, and science

[@samsngdevice5103]

I used this video as reference with my customers who have issues with flooding basements. By creating a hydraulic JUMP at the base of the roof's gutter system's down spouts, we achieved sucess by eliminating scour, with out digging a complex underground drain system. THIS CHANNEL HAS EXTREMELY HIGH QUALITY CONTENT. MY CUSTOMERS ARE DELIGHTED.

[@Jeremy_Fielding]

Very interesting indeed! Thanks for posting.

[@viaticknight8813]

Yo what’s up I’m subbed to you

[@DroneConflict]

"I owe me marriage to VPNs" Okay hold up where is this going

[@ov3rdrive966]

He's literally Nord VPN Man

[@blipco5]

Perhaps you could show a study of the dangers of low head dams?

[@mrslinkydragon9910]

The drowning machine!

[@msaynevirta]

An intresting video presentation by Ed Kern from 2013: "Fatal Currents - Low Head Dam Presentation" (kzbin.info/www/bejne/jqS8mIJ6otKcd68)

[@paranormalized]

Especially since he mentioned how some rec facilities use hydraulic jumps. Makes me nervous to think of some dumb amateur kayaker looking for a spot of turbulence for fun. Designed facilities are not the same thing as found facilities, folks!

[@y__h]

@@msaynevirta Thank you for the link. This video definitely reminda me of that presentation.

[@roondarmurnig338]

Also known as a weir

[@davidswalec3598]

Everything you publish is first class. You can really communicate the concepts to people. It's geeky, but makes me proud to be an engineer. If these were shown to high school students, they might choose different fields of work that make them happier. Kudos to you!

[@Beatlefan67]

Very enjoyable. No flashing images and loads of crappy music - just the facts and a practical demo. Thankyou!

[@daemn42]

In the process of researching the failure of the Oroville dam's main spillway in 2017, I read up on the earlier 2009 failure of their River Valve Outlet System, which involved a hydraulic jump. Their RVOS pulls water from the lowest/coldest point of the reservoir where it flows through a tunnel to a point under the dam near the turbine outlets (head pressure at about 300psi), and then can be released through a cone valve into another long tunnel that is joined by water from the turbine outlets (the tailrace). RVOS is designed to maintain minimum flow in the river when the reservoir drops below the turbine inlets and to regulate temperature for fish in the river. Oroville's Hyatt power plant is a pumping power station so the turbine outlets are submerged in their own trailrace which can either flow out into the Thermalito Diversion Pool, or pull water back from it when the turbines run as pumps. The tailrace consists of two 35ft diameter, 2000ft long tunnels. One is fully submerged, the other half full and they're cross joined. RVOS cone valves output into the half full tunnel at *extremely* high pressures and flow rates. Normally it blasts the water onto an angled steel dispersion ring which absorbs the high velocity flow from the valves, to merge it more smoothly with the low velocity flow of the half filled tunnel. The ring had been damaged due to many years of use so earlier in 2009, they removed it.. (presumably with intent to replace). Then a few months later management thought it would be interesting to conduct a test to open the RVOS valve to 100% to see what effect it would have (1. they'd been told never to run it at 100% due to prior damage 2. design specs said RVOS was never to be operated without dispersion ring). The manually operated control (just a big wheel) for the RVOS cone valve sits in a chamber connected through a long person tunnel up into the inner turbine room, and that chamber is separated from the ring valve outlet by a fully sealed 20ft tall steel wall. That wall was designed to fail with 15ft of head pressure behind it in the unlikely event that the manual control valve failed and let water into that chamber. This wall failure would prevent water from backing up the person tunnel into the turbine room. So.. 5 people enter the control room, and start to open the RVOS valve up to 100%. At 85% all hell breaks loose. The valves release about 4-5K CFS of water at extremely high velocity into a half filled tunnel, and without the dispersion ring this accelerates the velocity of the water in the tunnel for a few hundred feet. During original design (including extensive small scale testing), they realized that even with the dispersion ring a hydraulic jump could form as high velocity flow meets low, that might reach up to the roof of the tunnel, which could cause a vacuum condition in the tunnel upstream of the jump. So they built in a vent in the roof several hundred feet down the tunnel connected by a large tube running back to another vent in the cone valves outlet chamber. Idea being that if the jump formed between the two vents sealing the tunnel it could still equalize the air pressure on either side of it. But without the dispersion ring in place, the jump moved much further down the tunnel than design called for, and blocked the lower vent. This caused a siphon pump effect back to the valve outlet chamber, eventually causing high enough vacuum that the steel wall designed to hold back 15ft of water, blew out into the tunnel almost taking the 5 people in that chamber with it. Doors further up the man tunnel also failed and debris was sucked down that tunnel pelting the people in the chamber now open to raging water and continuing vacuum. With hurricane force winds coming from the person tunnel through the chamber into the RVOS outlet someone managed to turn off the valve to stop the flow. One person was seriously injured. RVOS was repaired in 2014, and operated again that year when drought conditions dropped the reservoir below the turbine inlets.

[@allencummings7564]

:O ......

[@allencummings7564]

Why tho? Why did they want to try that?

[@thom1218]

So what consequences did management face for reckless endangerment of 5 lives? Let me guess... a raise, promotion, transfer, or all three of the above.

[@daemn42]

@@allencummings7564 Short answer. They're idiots. Long answer according to the investigative report afterwards.. ""DWR removed the baffle ring in April 2009, four months before the test. It did so without consulting its Division of Dam Safety, which should have approved that action first. The test was ordered because DWR “wanted to determine the destructive effects” of opening the valves to 100 percent, according to the investigation."' Mission accomplished.

[@allencummings7564]

Military application then?

[@MoonyDrak]

I don't general comment on videos but I wanted to say how much I love how you handle your sponsorship ads. They don't interrupt your videos and are extremely well done and to the point. I even found myself watching them and I am even considering getting VPN just to support you. You sure as hell deserved it. Thank you and keep up the fantastic work!

[@Ferelmakina]

Fascinating. I got absorbed into the video and ended up in a calm place (the atmospheric music and friendly manners helped a lot). Thank you grady

[@TheMapleDaily]

I will respectfully watch every single ad and like all the videos, I absolutely love your content and you deserve all my support! Thank you for this amazing knowledge and thanks to you I am walking down a Engineering path!

[@Art-fn7ns]

One of the very few channels that favor quality, not quantity.

[@Brownie93]

I'm a kayaker and I clicked on this video because it reminded me of rapids and whitewater in rivers and then you explained it and even mentioned how we kayakers use this physical phenomenon to have fun! You explained it perfectly! Great video!

[@jkbecker]

Grady the type of guy to make a 100% overlooked phenomenon interesting and accessible.

[@deeser]

And yet again, you post a video that makes supposedly complicated and abstract things so easy to understand. Brilliant! don't stop being you and amazing. x

[@GoldenHat333]

normaly I would skip this video because the thumbnail couldn t get my attention but then I realized its a practical engineering video. Good work👍

[@6yjjk]

Well, better that than emojis and OMG slapped all over it. I hate that crap.

[@philliptoone]

I have an undergraduate degree in chemical engineering, a graduate degree in mechanical engineering, and another graduate degree in aerospace engineering where I studied hypersonic air breathing propulsion. And yet I learned absolutely NOTHING about hydraulic jump in school. I love learning new things so thank you so much for this video. :)

[@nathanwforrest]

Another great video! The only thing I would have added is a little discussion about what the Froude number is in various flow regimes. It would be useful for Civil students and others interested in understanding these things.

[@benitollan]

0:12 Right side: Lvl 1 turbulent flow Left side: Lvl 100 *L A M I N A R   F L O W* _That's how fluid dynamics works_

[@brutongaster8184]

I see you are a man of culture as well.

[@IkarimTheCreature]

you deserve a medal

[@rushthezeppelin]

Lol have you been watching SmarterEveryDay?

[@anasaloudeh2371]

Pewdiepie ft. Smarter everyday

[@alph5230]

Oh yeah yeah

[@yukiyama1391]

So, how do they prevent the hydraulic jump structure from eroding?

[@Fuyudo]

Make it out of concrete ;)

[@sarge852]

I would imagine (in a dam example) that because the slipway and hydraulic jump section is generally exposed or near surface close to the dam, it is easy to work on it there and maintain or replace damaged sections, rather than trying to repair erosion downstream.

[@vic91020]

I suppose that, since the structure is already in that turbulence zone he is talking about (since the hidraulic jump starts ahead of the structure), the effects of the erosion had already stopped being important before that structure.

[@vic91020]

@@Fuyudo Concrete is not that resistant to flow erosion. Cavitation can break it very easily, even metal.

[@USSAnimeNCC-]

I think engineers would take that into consideration

[@trackie1957]

“This is the definition of engineering…” That was truly beautiful. Non- technical people might not realize that there is elegance and beauty in engineering. It blows me away sometimes.

[@chrisrnz]

Fluid dynamics = "My feet slowly got wet." Rocket science = "Big tube go real fast." Got it. :)

[@waterman308]

Really nice explanation of the jump. I 'm an engineer for NJ and our erosion control program (urban; construction, storm water etc) deals with scour protection all the time. I'm going to forward a link to your video to our soil conservation districts for them to watch!

[@will8anthony]

support your teachers. it's hard to find great teacher

[@dc5723]

This was my favorite subject in civil engineering classes - hydraulics and fluid mechanics.

[@harisali2229]

Being a civil engineer, I wish that you would have been my teacher in my college days😔😔

[@Namejeff00]

As a student engineer, these videos are amazing for nailing theoretical engineering knowledge into awesome videos that solidify the science

[@zacknicley8150]

“. . . So I built a flume in my garage!” Is one of the nerdiest exclamations I’ve ever heard.

[@freechalupa6722]

That hydraulic jump at 3:58 propagates just like a normal shock. This is so cool--I've never seen the analogy with supersonic flow so clearly! Just replace the sound speed with the surface wave velocity. So this really is rocket science!

[@kuronosan]

I thought rocket science was like 90% fluid dynamics. Moving metal thing through fluid (atmosphere), controlling and directing flow of fuel.

[@garret1930]

There's also a lot of material sciences involved.

[@mikecurtin9831]

From what I can tell, the main difference is the density of the fluid medium. The principles seem the same, they just happen at much lower speeds in water.

[@garret1930]

@@mikecurtin9831 water is also essentially incompressible

[@feynstein1004]

Moving stuff through fluids is aerodynamics, fluid dynamics deals with the motion of the fluid itself iirc. But I guess they're close enough.

[@villageblunder4787]

And physics

[@AMa-us8de]

One of the most useful channel on youtube, 100% scientific, No joke

[@prafullgupta5248]

Absolutely love your videos and how you make civil engineering so fun! Keep up the good work! Cheers!🙂

[@luistomaslloyd870]

This guy's channel and its demonstration + crash course fan facts and animation + kurzgezagt philosophical approach and animation + khan academy/organic chemistry examples = ultra ideal tutorial video

[@Slyder2828]

Smarter Every Day channel talked about "laminar flow" this week, youd appreciate the video😎👍

[@markp8295]

I thought it was suspicious as well.

[@yenrabretep5538]

I've just discovered this channel - I always wanted to be a Civil Engineer but ended up as a Chartered Surveyor - This channel is excellent and reinforces my view - I should have been a CEng.

[@AudioGardenSlave123]

1:14 A nightmare for my over imaginative mind.

[@TheKajunkat]

yeah, can you imagine standing on that catwalk looking directly down in the maw of that thing. geez.

[@6yjjk]

Nope to the power of nope, noped.

[@Midnightrider773]

You hit the nail on the head, nice to know I'm not the only one. I think my heart stopped & my mouth opened. What if? What if? What if?

[@AudioGardenSlave123]

Come on Georgie. We all float down here.

[@afh7689]

Same here. If you're feeling adventurous, check out this video. It starts out fascinating, but wait for what happens after the cameraman zooms onto the stairwell a couple minutes in: kzbin.info/www/bejne/nHu5c5-enNlsoJo It's during a regular test that shuts a valve near the turbine and what you see is holding tank to prevent a water hammer (which can cause damage to the water tunnels) from forming when the water tunnels to the turbine are closed. The uploader works at that dam, so check out his other videos, including down that hole on the right and a device (located up the incline) that is lowered down it to remove/replace the turbine blades.

[@Simon-jb7xx]

I am so glad I found this channel. I've been fascinated by dams, weirs, watermills and basically everything that has something to do with large masses of water since I can remember.

[@pandagineer1614]

In rocket science, there is a perfect analog: the shock wave. It also forces flow to go from supercritical to subcritical.

[@ekarademir]

Two months of fluid dynamics course packed into 8 mins! Thank you very much for this.

[@TheReligiousAtheists]

When you see ocean waves coming on shore and then retreating, you can see a 'battle' between the receding and approaching waves, as mentioned in the video. Is that also a hydraulic jump? If yes, which is the tranquil bit and which is the fast bit?

[@thaflexmachine5267]

The best and most useful channel on youtube PERIOD.

[@studinthemaking]

At 01:15 what dam is that? Never seen it before and I love dams.

[@Febulights]

studinthemaking Right?! That's pretty gnarly looking.

[@promasreemajumdar1433]

Fluid dynamics is my fav subject and this video just incredibly made me more interested towards this subject. Thanks a lot.

[@foobarbecue]

What a complicated way to say "the water piles up against an obstacle"

[@foobarbecue]

Right. Like I said, it's intuitive and easy. This video tries to make it seem like something surprising. There are a lot of things in physics that I do find surprising. In fluid dynamics, I'd go with the Venturi effect and Mach diamonds. Elsewhere, gyroscopic precession, quantum locking. But this video spent nine breathless minutes saying "water piles up and the slow part ends up on top."

[@AndrewNowacki]

Wish videos like these had existed when I was in school. Classes like fluid mechanics would’ve made so much more sense.

[@seneca983]

Does anything special happen when the flow is exactly critical or very close to it?

[@villageblunder4787]

The height of the water becomes very variable.

[@rossbaker8197]

Critical flow is also a very unstable condition that engineers seek to avoid when designing channels. You would ideally design the channel so that either the sub or super critical flow dominates, because as you approach critical flow conditions, the system as a whole becomes increasingly unpredictable

[@seneca983]

@@villageblunder4787: Thanks. It'd be interesting to see what that looks like.

[@Rattiar]

Hey! I can see the dam on the Mississippi at 5:55 from my house! :) When he talked about the energy dissipation over a dam, I immediately thought of this one, because during snow melt in the spring, the river gets going really fast and the flowing water makes beautiful plumes of white water when it hits the bottom of the spillway.

[@LovelyAngel.]

Where is the dam from 1:11? :o Looks amazing, never seen such before

[@CodeKujo]

Huia Dam, perhaps. That's a bellmouth spillway.

[@tictacbergerac]

Hi! I'm a whitewater kayaker who's tried some playboating in the past. It's super fun. I'm really glad you mentioned it in this video :) Thanks for posting!

[@TilmanBaumann]

Those hydraulic jump spillways are also really dangerous. Not always a good compromise.

[@PaddleGnome]

He was referring to dams with dissipation on the downstream side which prevent an abrupt hydraulic jump and prevent a retentive hole from forming to avoid erosion (and avoid a severe drowning hazard)

[@niteshades_promise]

Tilman Baumann yep i almost died in one. glad i have an inflatable boat and not a canoe. see main comment for more info.😩🍻

[@quizzlerprofessor]

Sir I came here from learn engineering. I am doing civil engineering. And I found your channel .Really amazing!!

[@flashblazeyt]

We need to get this channel to atleast a million subs A Mechanical engineer

[@Zoidberg227]

Glad to have a civvie who can explain open channel flow to this mechie. I've had a few false starts on reading up on hydraulic jump, but never really got anywhere. I've seen the sink example, but it didn't really give great insight like tying in subcritical and supercritical flow. Also, I definitely experienced some low-key anxiety from the shot of the bellmouth spillway with the viewing platform right over the middle. Nothing like rolling a little acrophobia, bathophobia, submechanophobia, and a residual childhood fear of drains all into one! I also feel completely compelled to visit someday ... where is it?

[@allenjolley8080]

Me: Lord, bless me with sleep at 03:45, KZbin: Tenuous engineering tutorial..? Me: I’ll sleep when I’m dead; KZbin; teach me.

[@tilerman]

Fascinating. thank you. I have a white water centre near me in Nth london and on my visits observing the canoeists i noticed that when exiting a 'rapid' they actually stayed where they were and didn't get pushed downstream. I was puzzled. I found your video and it goes some way to explaining why. Thanks again.

[@blipco5]

1:11 You mean like the Oroville Dam?

[@ashman0071]

my EE dad came to watch me, Steven Peshin, Bobby Gill, and Evan Danlo play in our neighborhood river - he told us to stay far, far, far away from the Weir and watch out for the 'Back Wave' ( he knew it was a hydraulic jump ) before the bridge ........ he was always there - that's why we are are here ....... miss you James

[@TheAlbaniaGaming]

Can someone please tell me where 1:12 is??😍😍

[@afh7689]

I want to know too.

[@afh7689]

Lower Huia Dam near Auckland, New Zealand. Found this in another post and verified with a Google search. www.cs.auckland.ac.nz/~bwue001/Tramping/LowerHuiaDamCircle/LowerHuiaDamCircle.html

[@russellkanning]

I have seen a couple others too .... usually with some sort of fence to keep people out

[@adamkendall997]

No way, 5:01 is way better. 😍

[@jonathanlanglois2742]

That is quite interesting. We have several dams in a row where I live. 3 of them are sitting within about a kilometer of each other right next to the city center in a gorge. We've got some of the hardest and oldest rock on the planet underpinning those dams, so erosion isn't as much of a concern. The major concern around here is freezing and thawing cycle, especially with global warming. It used to be that once the temperature dropped under zero, it would remain there until spring, but nowadays, it's gotten quite common to have several thaw mid winter. The river flows north, which can lead to winter flooding downstream. They are run of the river dams, so they just don't have the capacity to hold back excess water. They've been upgraded theses last few years with better gates to let the overflow out.

[@celivalg]

hydrolic jumps are also super dangerous please mention that somewhere before people drown while trying it out in a kayak

[@markflierl1624]

We have plenty of people. We can afford a few deaths by hydrolic jump.

[@TheKazragore]

If people want to nominate themselves for a Darwin Award, that's their business.

[@celivalg]

TheKazragore yeah well... I wasn’t aware that these were dangerous before a few years ago, they seem not completely friendly, but they are far more deadlier that they actually look... once you get stuck in one, you don’t get out

[@spyone4828]

All kidding aside, the dangers of hydraulic jumps are not immediately obvious, and many of those killed are rescue personnel and even those trying to recover the bodies of rescue personnel.

[@mikecurtin9831]

As I'm seeing it, knowledge of what's happening mitigates most of the danger. Like with rip currents; for scuba divers they're a free ride out. The difference between safe and not is in recognizing and understanding what's going on. Without trying to be judgy, what makes things dangerous is ignorance and stupidity.

[@dalnayak]

As a civil engineering student I am very lucky to discover this channel.

[@axton9954]

Neat

[@JakobusVdL]

Thanks, you've got an absolute gift for explaining engineering theory clearly and concisely.

[@spencertom2821]

watching this video made me thirsty. also watching this video made me realize there is soooooo much water on earth.

[@Bauto98]

Man, i really love this channel. You are the best channel about engineering. A big shout out from Argentina!

[@Asdayasman]

"Unlike rockets, you might have some intuitions about-" Uh m8 You think I haven't played Kerbal Space Program?

[@MlTGLIED]

Very nice video. That's how I've learned it for many years in hydraulic and coastal Engineering Greetings from Germany

[@buck960]

in munich people surf the eisbach, i guess thats the same principle there

[@renatoigmed]

ok. but when comes HL3?

[@0num4]

Helluva tie-in for that native advertisement. I'm not hating on it at all...that's awesome.

[@clairekalla]

Water flows 8 Blocks lol

[@MrCreeperrr]

LOL

[@benkitson293]

LOL

[@davidsprofitt]

Hello from the Dayton, Ohio area, where your footage around 1:50, 3:20, 5:22ish and 6:40 come from. Seeing that you report to be in Texas, these random shots from my local parks were an enjoyable surprise. :)

[@DubiousEngineering]

Very interesting engineering... definitly not duboius! :-)

[@daviswing]

I don't know if I can express in words how much I love this channel.

[@par5endos562]

I can't see the whole shirt, but methinks Grady is representing the HSV. ThinkerCon swag?

[@mattquick5045]

I think you have revived something we have all lost. The benefit of the science fair. As a kid I loved to learn and I built a great many structures with blocks. Then in school I had to do a boring science fair project to show my knowledge of a subject. But it had to be on a specific subject in a specific way so that the teachers could easily grade it. As such I spent many hours labouring over a demonstration I knew and understood overly well. Now in college and struggling with my physics course I see how much I could benefit from constructing my own lab demos and personal demonstrations. You have opened my eyes to something I discarded long ago. If you can reliably demonstrate something, then there is a good likelyhood that you understand it.

[@feynstein1004]

This video would've been sooooooooo helpful during my 6th semester of college 😂

[@tommyfrerking]

5:55 that's where I live, Saint Anthony Falls on the Mississippi River in Minneapolis! I pass over that bridge on my way home every day and I love watching the water flow!

[@69adrummer]

1:20 Now, I'm not that young, and i don't know all the cool lingo the kids are using these days but I think it's fair to call that a #NOPEHOLE

[@thatonezach]

69adrummer oww

[@ice9743]

Ooh you did the video finally. Maybe you'll do another What's that Infrastructure video soon? I would also love to see more geotechnical videos with models like the internal erosion, ground water flow, and reinforced soil videos.

[@leptdre]

Intro music ???

[@civillocity1741]

Best Channel for Practical Knowledge of Civil Engineering.

[@midnightdarkchocolate]

You know it’s that time of the month when your girlfriends flow goes from subcritical to supercritical

[@peterklein1347]

MidNight DarkChocolate LOL

[@feynstein1004]

Perhaps you should make her jump too ;)

[@christopherbrooke2142]

Feynstein 100 Watch out for erosion tho

[@thomasnewton8223]

Tampons are the ultimate hydraulic jump

[@WLxMusic]

Umm, wouldn't that just cause the flow to be a lot heavier? I think supercritical would not be too bad to deal with.

[@ComradeCovert]

I love seeing how the quality of these videos have improved very nice

[@unknowncritical8866]

I'm thinking of being a civil engineer when I'm older but I don't know what qualifications I need Please like this so that he will see it

[@lupuszzz]

I like to have dangerous superficial knowledge! ;-) You explain things so well, that I think to understand complex things after 5 minute videos. Thanks a lot, you motivated to read books about fluid mechanics as a telecommunication engineer.

[@georgezarifis7409]

If you are looking to get married you should probably get a VPN...

[@feynstein1004]

Lmao upvoted, dude

[@jhboomstudioz7201]

Feynstein 100 “Upvoted” Ah I see you’re a man of culture as well

[@visano.]

How relevant haha

[@Alex4n3r]

You are the best! Explanations as vivid as these should be mandatory in fluid dynamics classes.

[@VPCh.]

"I owe my marriage to VPN..."

[@CFG39]

What I find very interesting is how certain aspects of environmental regulations (buffers around ponds and streams) have discarded what is BEST for long term erosion control, safety, and ease of maintenance in exchange for some more “eco friendly” solution. For example, nowadays concrete flumes into ponds are not allowed in many jurisdictions.

[@theInternet633]

"Fluid dynamics might sound as comlicated as rocket science..." Boy i wish it was. Rocket science is weak shit when compared to fluid dynamics. There's a reason why theres still a Millenium problem open on the Navier Stokes equation.

[@ZacJones]

I wish this channel existed when I was taking fluids and hydraulics back in college

[@mustafaYkhan]

Nord vpn.....????? Naaaahhhhh I like nord lock washers

[@beachbum4691]

Of consequence to everyone with water flowing through their property. Designing hydraulic jumps into very modest summer streams that go crazy in the winter now made understandable and simple. :) That's what I call a gift to society, and I measure us all; including myself by that simple question, "what is your gift to society"... Thank you :)

[@yashfiuqesybr]

Laminar flow all the way..... edit: omg... so many likes.. Thank you ... this is my most liked comment so far.... Heil Laminar Flowwwwww...

[@USSAnimeNCC-]

SmarterEveryday hey 😉

[@yashfiuqesybr]

@@USSAnimeNCC- who dis? ;)

[@robertw6894]

LAMINAR FLOWW

[@USSAnimeNCC-]

@@robertw6894 Party Trick and Natural Beauty ⛲

[@sinnison23]

Destin agrees kzbin.info/www/bejne/r2irqpZpgrd-pNE

[@TheFarmacySeedsNetwork]

Excellent video! When I worked for an engineer we used Topographic Maps combined with HydroCAD and Auto CAD to design good drainage structures. cheers!

[@dawnofjustice4689]

Your Videos should be longer 😌

[@douglasharley2440]

this is a REALLY good channel. truly, a youtube gem!