Hydraulic flume demonstration

We would like to introduce you to our demonstration hydraulic flume. The flume is a scale model of the flow of water in a simple channel, driven by a system of recirculating pumps and featuring scale models of typical engineered structures such as weirs, bridges, culverts and debris screens.
For further details, please see www.jbatrust.org/how-we-help/....
Please use, share and adapt this resource with attribution to JBA Trust.
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

[@chikensuup7746]

I have no idea what they're talking about, but I still find it really interesting

[@fgip358]

Lmao same

[@Entropy256]

3 years and only 28 (+1) comments. I've never seen something like this in my recommended... I like it.

[@yeossoyabean9965]

63 now

[@tomastylecek7209]

beavers are the best water flow obstruction engineers

[@johnray183]

Can’t believe I’ve only just found the JBA channel - I’m in heaven !

[@johnvries6482]

How did I come here with youtube recommendations? It is one of the better recommendation ive had

[@fgip358]

How doesn't this channel have at least 1 million subscribers

[@kermudgeounthepowerful7642]

This was worth looking up

[@sarcasmo57]

Why the high visibility vest? Apart from that your video was very interesting, thank you.

[@richardwakefield282]

Health and safety regulations whilst working near water ;)

[@elhamzawishy]

I absolutely love science and you're doing an absolutely amazing job conveying these mesmerizing facts. thank you.

[@coccrut7841]

Amazing cluvert and filter knowledge. Thanks for shared

[@playerxmaya7937]

when I see culverts and a rake, I immediately remembered Post 10 😅

[@JoseSilveira-newhandleforYT]

LOL

[@lorenzopearce14]

I really like these vids

[@maisnamnongthouba8057]

Good one. reminds me of hydraulics and hydraulic structure subject.

[@welshpete12]

I find this fascinating . Your demonstration of the three arch bridge , reminds me of something that I have wondered about all my life. Near were I live is a medieval bridge built in1490 . Which is still in use today, there are 6 arches ,. Upstream of each , is a stone ship shaped like extension . Presumable to protect each arch from debris such as large tree trunks that sometimes come down on a flood . And to divide the water as it goes through each arch . But the interesting thing is there is a similar shaped structure on the down stream side of each arch . Is this to stop the water washing out the foundations of the bridge , by smoothing the flow or is it for some other reason?

[@DennisGr]

interesting, in regensburg where i lived there is a similarly build bridge, it was made in the 12th century and i too always wondered why it was built that way. en.wikipedia.org/wiki/Stone_Bridge_(Regensburg)

[@trentwood1449]

kzbin.info/www/bejne/o5C9faywd96db5o They have another video that shows a bridge peir in action. Your hypothesis is correct. It's the same principle as the angled weir to try to reduce the WAS level and scouring.

[@monsterhunter93]

I don't why but I kinda like this youtube channel

[@JaszyLee1]

or do you know anything on how to make water waves it would be really helpful

[@danilmerkurev6248]

Nice toy. Now I want the same.

[@RMCFilms]

Interesting thing after ages

[@azkarafiffaww]

*NICE*

[@rafaelaraujo5865]

i would like to have that in my childhood

[@christopher19894]

The way the water flows over a weir is oddly mesmerizing.

[@mr.imtrying5174]

You should make more videos and try one out with different angles and different types of drops

[@JaszyLee1]

is there a way I can make this cause I have a engineering project and I need to make one cause I have to make a water turbine and I want to use what you made for I wont be constantly have to be moving the water

[@paulredinger420]

Actually this stuff is very interesting.

[@lynnguadalupemarinflores70]

Hi, can you tell me what´s the thickness of the acrylic?

[@andrewau1993]

Is there any equations for the water levels of both side

[@armandocolon6076]

So there's no design better than the other it depends on what you need. So that's the reason why there's so many different people.

[@akiraic]

what am I doing here, and why I want to build a miniature river simulation?

[@ralphcalzada4767]

interesting

[@turkerozgiray6308]

what happens if we set them to between middle of two oceans,

[@NotSoTipical]

Do you secretly hate Dan for getting over 2.2million more views on his video than you got on yours?

[@bandit9259]

i'd say dan's video was better because he showed us real world comparisons

[@HR-wp3fj]

What is the mean of JBA group

[@kodeine222]

why do they say really rough concrete to describe how rapid the water is? what do they mean they said it twice in the videos i watched of theirs

[@PhilEarp]

They are saying the surface roughness of the Perspex is similar to the roughness of concrete if you scaled the model up to the size of a real river

[@etrule]

Post10 should come watch this. Lol

[@Mexximillion]

Putting that dam at an angle did basically nothing. She only drew the line a bit lower lol.

[@mr.imtrying5174]

I agree but this if for big scale, it would take longer for the water to get to the point of being a problem

[@Veyron104]

Зачем нужны "первые" заграждения? Если вы хотите меньше поднять уровень воды перед заграждением, разве не проще просто сделать его ниже????

[@Squeeeez]

Poor duck :(

[@joesmith9330]

AT DISNY WORLD THEY WOULD CHARGE 50 DOLLARS FOR THAT DUCK TO DO THAT !

[@bernharddiener2735]

I cannot agree with the angled bridge. The elvel is newrly the same and you are messuring on the side towards the camera which is farer away from the entrences. So obviously the water is blocket a lot more on this side. So if you messure on your side the result will be different if not inverted. If you build these tunnels in an angle, the entrace would increase towards the direction of the river flow which would absolutely increase the flow and with this decrease the water level upstream. But your model looks like you did not build the tunnel with the same cross section towards the direction of the tunnel but with the same cross section towards the direction of you main river flow. So, the netrance is the same. This is not what you want to show, or is it? I also don'T agree with your angled bar screen. Because what you want to show is that the angled one doesn't block the water so much because of the angle the step. But are showing something else. THe non angled one decreased the entrance surface area right at the entrance. this angled one quite a bit before. So it just creates its own blockage which is completely independent from the blockage of the tunnel entrance. and because the bigger blockage is the tunnel, the screen dosn't effect the water level. It's just not the bottel neck. Bit is also wouldn't it you would built it vertically but a bit away from the tunnel. And when you covered the entrance with this green something, the first entrance was blocked completely while this one wasn't because it is not right at the entrance. Thats not a fair comparison