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can someone explain that very thin streamline in the middle of the bar?
ATERIFA 2 weeks ago
Low Re can avoid the infinite velocity problem, not to mention the manufacturing impossibility of a zero-radius corner. This is classic Hele-Shaw flow
DaylightDigital 2 months ago
how would that be possible in real flow?
There are at least 3 points with infinite velocity in ur video...which is not real at all
1Mtsm 8 months ago
... Isn't the fluid supposed to swirl behind the plate? Isn't that why some objects have more air resistance than others?
Shoyrou 9 months ago
Okay, I've seen several videos from your channel, and I may only conclud that what you call a "experiment" is just a simulation. There is no way this could happen withouth some layer separation. You'd need extremaly low Reynold number to get this effect! So unless you say you used a micro-plate filmed through a eletronic microscope, I will have to say that you, sir, are lying.
MrQuuem 10 months ago
@MrQuuem I wish people like you could stop bullshitting on youtube. There have been pictures in books showing this effect, books that have been published and their claims verified. It has been done in labs using small objects in a high viscosity fluid and extremely low flow speeds. The effect then observed using ordinary microscopes not the electron (or electronic) microscopes. It's people like you having the tiniest clue and pretending they know it all that frustrates me.
CoolMartensite 9 months ago
@CoolMartensite And it's peopel like you, that don't understand that cetisism isn't harmfull to anyone, that frustrates me!
As I said, extremely low Reynolds number required! Ok, the part of eletron microscope was a mistake, but this doesn't change my point: it has very few references about its conditions, and this led me (and many others) to doubt this results, based on our usual experience. Could you please give me some references about this? I would be glad to add this to my "tiniest clues".
MrQuuem 9 months ago
hmm. there has to be a boundary layer separation. potential flow cannot be assumed for a flat plate placed perpendicularly to the flow
imdbstar 1 year ago
that's not an airfoil
shim2dawg 2 years ago 9
@shim2dawg That's not a banana either !
gomunkul 6 months ago
Nice, This is the elegance of science!
sidbud21 2 years ago 4