Why does the water jump..??!! -- Hydraulic jump explained.!!

[@ecneics3847]

We apologize for the error regarding the concept explaining the critical depths. Those are sequent depths, actually. There is an energy loss and the specific energy is lost, but the specific force remains the same.

[@stephenstringer6547]

The accompanying music is frustratingly loud.

[@bishaldhauraly2933]

This 3 min was more worthy than an hour lecture on this topic ...superb mate

[@alwaysdisputin9930]

No it wasn't. You still can't say why the water jumps. Even if you could, your reasons would be from elsewhere, perhaps books - they wouldn't be mentioned in this video

[@monikakreitmair9403]

Really nice and engaging animation! However, you mention at 2:24 that the two depths are "sequent depths because they represent the same energy". This is not correct: the flow either side of the jump does NOT have the same specific energy (in fact, hydraulic jumps are used to dissipate energy in dam spillways to protect riverbeds) but the same momentum flux. Sequent simply means "following" in latin and means that depth y2 follows depth y1. Because they represent the same momentum flux, they two depths are also known as "conjugate depths". Still, really great animation :)

[@josephoyek6574]

Does y1 change into y2 automatically without interference from the geography of the environment (the subcritical y2 empties freely as a waterfall)? Or is it a blockage of some sort downstream that makes the y1 depth jump up?

[@shivatribe6297]

@@josephoyek6574 this is because the velocity is very high in supercritical stage because the water comes from a high head like spillway so to maintain the energy in subcritical stage it's depth has to be increased I hope you get it❤️

[@williaminman8055]

A really helpful video, short and sweet but explained much better than any other video I've watched on this. Thanks!

[@alwaysdisputin9930]

No it wasn't. You still can't say why the water jumps. Even if you could, your reasons would be from elsewhere, perhaps books

[@channelsgeo]

There is a confusion about two different fluid dynamic phenomena in this video: a standing wave is not a hydraulic jump. A hydraulic jump, typically, results from the transition from supercritical to subcritical flows , however, a standing wave can mantain the supercriticallity. A standing wave is always connected with a positive relief bedform (typically an antidune). A hydraulic jump, on the contrary, on a mobile substrate produces a negative relief through erosion and, on a non-mobile substrate, a quick upslope migriting hydraulic jump (sometimes downslope depending on flow conditions. Even the flow structure of a standing wave and a hydraulic jump are totally different.

[@KalyanAngara]

Very well explained . . You've covered all the concepts related to jump phenomenon in a very short time but with great clarity. Looking forward for more

[@ecneics3847]

Thanks...!!

[@alwaysdisputin9930]

No he didn't say why the water jumps. Therefore it's not well explained

[@himanshukishore8012]

I m doing civil engineering . Nd you covered whole unit in just 3 min video wow .. U r like God one day before the exam ...

[@ecneics3847]

I'm no God..!! But thanks for the acknowledgment..!!

[@ILUTutorials]

well explained, one thing you missed is you mentioned specific energy as total energy (in equations). You should have mentioned that for specific energy datum is taken as channel depth, Then it would be more clear. Thanks

[@MrHarsha8]

i really have no clue how much i should thank u...

[@rohithjohn]

Wow ...Simple and perfect ...Hats off

[@alwaysdisputin9930]

No it wasn't. You still can't say why the water jumps. Even if you could, your reasons would be from elsewhere, perhaps books

[@praveenp806]

Bro which software did u use to make the video...I mean that writing etc

[@xualan5403]

What happens after critical flow or energy becomes less than energy minimum? Does flow stop?

[@sakthivelEr]

Yes , very useful and clearly explained in short time and looking forward for more , hope u will upload the same

[@alwaysdisputin9930]

No it wasn't. You still can't say why the water jumps. Even if you could, your reasons would be from elsewhere, perhaps books

[@shivatribe6297]

Your vedio is best for the person who revised the subject and has little bit doubts like me and I get the idea which I needed thnx❤️❤️

[@nabi9859]

Awesome man ...Great explanation

[@bikash_11]

Energy is dissipated in hydarulic jump then how Y1 and Y2 can have same energy?

[@ecneics3847]

Yes. There is an energy loss.

[@waqaralihussaini366]

I WOULD HAVE PAID FOR THIS GREAT VIDEO ...love you mannnnn keep the great work

[@praveensaksena2]

Thank you very much sir..

[@nirmalyadavnk2097]

Thank u sooo much sir U explained very well👌👌👌👌

[@alwaysdisputin9930]

No he didn't. You still can't say why the water jumps. Even if you could, your reasons would be from elsewhere, perhaps books

[@giaoz99]

thanks a million

[@lokmangunay7077]

Great animation and subject is very well expalined in a short amount of time. Would be better if there was a subtitle :)

[@alwaysdisputin9930]

No it wasn't. You still can't say why the water jumps. Even if you could, your reasons would be from elsewhere, perhaps books

[@lokmangunay7077]

@@alwaysdisputin9930 sooo, could you tell us why the water jumps ? :) Thnx

[@alwaysdisputin9930]

@Lokman Günay OK. The thing that really helped me understand is this video: 'What is a Hydraulic Jump?' kzbin.info/www/bejne/baXNl2t-jM6Fabs by Practical Engineering 3:47 Here we see water is flowing left to right. 3:56 The guy makes a wave travel from right to left. We see a hydraulic jump form! 2:07 He says: "If the flow velocity is exactly equal to the wave speed we call the flow 'critical'" It's like there is a wave on a treadmill. 3:33 Here a man is peeing into a kitchen sink. Let's try it at home. In the centre the urine hits the sink & move towards the walls of the sink. Around the centre we see a circle. This circle is formed by a hydraulic jump. The area within the circle is fast moving urine - this is the supercritical area. The area outside the circle is slower moving urine - this is the subcritical area So somehow a wave is trying to move towards the centre. Sorry but I don't understand why there is a wave trying to move towards the centre. At a guess I'd say ripples are being created that move towards the walls of the sink & then bounce back. These ripples all stop at the hydraulic jump where they interfere constructively i.e. they combine to make a big wave. Decades ago, I remember hearing how in a flute waves travel towards the end of the flute where there is a hole. The waves bounce back. I found it weird because how can they bounce off a hole where there is just some empty space? I think they were probably standing waves. So maybe I'll look into this & come back 1 day & complete this explanation. -------------------------------------------------------------------------------- Ok so now I want to talk about something that fascinates me = how the hydraulic jump is like the event horizon of a black hole. In this video, 'How to Make a White Hole and an Einstein-Rosen Bridge in Real Life' kzbin.info/www/bejne/pmSzZZyBl5dnhMk The Action Lab says the hydraulic jump is like the event horizon of a white hole It's famous that light can't escape from a black hole. It can never cross the event horizon Similarly light can never enter a white hole - it can never cross the event horizon. The Action Lab shows that we can make waves which travel from supercritical to subcritical. We could tap out a message in morse code. Someone in the subcritical area could read our message But it's much harder to make waves which travel from subcritical to supercritical. So that person would find it difficult to reply to us. Since it's difficult to get information to travel from subcritical to supercritical, the hydraulic jump is like the event horizon of a white hole Now let's imagine time is flowing backwards. The urine flows from the subcritical area. There is a hydraulic jump down to the supercritical area. The urine flies upwards & into the hole in the middle of his penis. This penis hole is like a black hole. So loads of stuff is pouring into the black hole. But let's say time is flowing normally for us. I stand in the supercritical area. You stand in the subcritical area You send morse code ripples towards me. I get your message. I try to send morse code ripples towards you. My ripples can't get pass the hydraulic jump. The piss is travelling too fast towards the black penis hole. Thus the hydraulic jump is like the event horizon of a black hole

[@jagdishjena9058]

Great sir

[@alwaysdisputin9930]

No it wasn't. You still can't say why the water jumps. Even if you could, your reasons would be from elsewhere, perhaps books

[@csako2668]

not gravity - but surface tention

[@JFF-space]

Why does it jump..... That's the whole point - The water will not check its froude number right? So then why does it jump technically?

[@wafaaabass]

open translation please

[@burakceylan9409]

thanks sur

[@강공-d3m]

Thank you...

[@csako2668]

tension - not tention duh sorry

[@alwaysdisputin9930]

You haven't explained why the water jumps. I'm reporting this video for being clickbait

[@jaekae1482]

Too fast

[@arlindramadani1893]

Pls just have some native english speaker do the speaking for you , too fast talking and way too bad english accent , shame id love to watch this but dont understand a single word