Thanks for this I learned something! This makes me curious about how the dips might affect things like water striders, insects that walk on the surface of streams, and if they notice such dips and have to compensate for it as they move in any way. Now i gotta watch the other related vids!
This might make for an interesting experiment. A simple small flume wouldn't be super difficult to build, and you get a wide ranges of small to large dips just by changing the speed of the current or the size of the underwater bump. And also, the opposite type of result (surface of water jumping upwards) can also be created - "Hydraulic Jump". Either of these phenomena, surface rising or lowering, could make the water strider seem heavier, potentially affecting its ability to stay on the surface.
I reread my video description, and I worded that a little poorly, so I rewrote it and added a few specific examples. Previously I was kind of conflating 2 different scenarios, supersonic compressible flow, and open channel supercritical flow. What I meant to describe as exceptions to this video are Hydraulic Jump - where a bump would cause the flow to instantly change from shallow and fast to deep and slow - and also a supersonic nozzle, which gets faster as it gets wider, which is also the opposite of this problem. I don't think supercritical flow in itself will necessarily always increase elevation due to a bump, so that was my bad explanation before for accidentally implying that. I hope this rewording is more clear, and more correct.
Thanks for this I learned something! This makes me curious about how the dips might affect things like water striders, insects that walk on the surface of streams, and if they notice such dips and have to compensate for it as they move in any way. Now i gotta watch the other related vids!
This might make for an interesting experiment. A simple small flume wouldn't be super difficult to build, and you get a wide ranges of small to large dips just by changing the speed of the current or the size of the underwater bump. And also, the opposite type of result (surface of water jumping upwards) can also be created - "Hydraulic Jump". Either of these phenomena, surface rising or lowering, could make the water strider seem heavier, potentially affecting its ability to stay on the surface.
This info is really helpful. Great job 👏🏻! Thanks for sharing 🙏🏼
You're welcome. Have a great semester.
Unbelievable video quality. Keep going professor!
Thanks, will do!
These lectures are amazing, thank you!
It's my pleasure, I'm glad you like them.
Came here from your comment on reddit, this was extremely helpful thank you!
Awesome. I always have to remind myself over there, "this is your real name, be helpful, don't be a troll" lol. Good to know I was helpful!
Thank you!!
You're welcome!
However, if it’s supercritical flow the elevation will increase at bump right?
I reread my video description, and I worded that a little poorly, so I rewrote it and added a few specific examples. Previously I was kind of conflating 2 different scenarios, supersonic compressible flow, and open channel supercritical flow. What I meant to describe as exceptions to this video are Hydraulic Jump - where a bump would cause the flow to instantly change from shallow and fast to deep and slow - and also a supersonic nozzle, which gets faster as it gets wider, which is also the opposite of this problem. I don't think supercritical flow in itself will necessarily always increase elevation due to a bump, so that was my bad explanation before for accidentally implying that. I hope this rewording is more clear, and more correct.
Called it
nice!
🌹🌹🌹🌹!!!!
Thanks for watching!