4 ms·
But if those rotors were even a few grams out of balance, you'd feel it. Also, if something went wrong with the valves, you'd also hear it. Right before you dro
by jeffrallen 3y ago
But if those rotors were even a few grams out of balance, you'd feel it. Also, if something went wrong with the valves, you'd also hear it. Right before you drowned and/or were killed by flying concrete. Moving water does NOT like to stop.
- jacquesm 3y agoYes, the water hammer from a major dam must be quite impressive if you try to contain it by main force rather than to reduce the flow gradually.
- cesarb 3y agoI've seen some videos which show, if I understood the description correctly, chambers which contain the overpressure from these water hammer events. For instance: https://www.youtube.com/watch?v=fJVBlhgt9j8 https://www.youtube.com/watch?v=fJVBlhgt9j8
- jacquesm 3y agoThat's impressive. I've seen a 2" butterfly valve attached to a stepper motor blown clear off the tube it was on because it closed too quickly. Oops... expensive lesson.
- jeffrallen 3y agoHere's a documentary on one disaster: https://youtu.be/OjMtbkFF3RM https://youtu.be/OjMtbkFF3RM 75 deaths. RIP.
- jacquesm 3y agoOh, that's ugly. Not to be callous: but it could have been much worse still, in spite of all of the failing safety systems. The dam itself could have failed and the downstream effects would have been on a completely different level.