4 ms·

The phys.org article and headlines are misleading, the authors did not investigate systems to actually transmit torque. From what I gather, the interesting find

The phys.org article and headlines are misleading, the authors did not investigate systems to actually transmit torque. From what I gather, the interesting findings are the parameters for co-rotation and counterrotation of the driving and driven cylinder, depending on the Reynolds number, distance and so on. To illustrate one of the images of their publication: https://i.imgur.com/m8P2iVw.png https://i.imgur.com/m8P2iVw.png

MadnessASAP 9mo ago
That would make much more sense then what the article seems to imply (scientists reinvent a 100 year old torque converter! But worse!!). Of course that headline isn't nearly as fun (scientists develop better model for fluid dynamics in torque converter).
dang 9mo ago
Can someone suggest a better (i.e. more accurate and neutral) title?
- bwoah 9mo ago
  Mapping out How Fluid Mechanical Spin-coupling Interactions Depend on Proximity, Confinement, and Flow State Alternate: New Ways to Understand, Control, and Exploit Hydrodynamic Spin-spin Interactions in Applications The article doesn't really deliver on either headline, but that's the fault of the article, not the study.
  - dang 9mo ago
    The limit is 80 chars and I'm not sure how to squeeze those in. I've taken a crack at something simpler in the title above. Does it work?
- gnabgib 9mo ago
  From the original source: Scientists Put Teeth Into Water-Driven Gears https://www.nyu.edu/about/news-publications/news/2026/january/scientists-put-teeth-into-water-driven-gears.html https://www.nyu.edu/about/news-publications/news/2026/januar... (Can't tell what the submission title was, but the byline (with quotes) works too: “Fluid gears” invention offers promise for improving mechanical devices)
  - dang 9mo ago
    Ok, let's try the second one. Thanks!
hammock 9mo ago
But these things exist though. https://en.wikipedia.org/wiki/Fluid_coupling https://en.wikipedia.org/wiki/Fluid_coupling

MadnessASAP 9mo ago

That would make much more sense then what the article seems to imply (scientists reinvent a 100 year old torque converter! But worse!!). Of course that headline isn't nearly as fun (scientists develop better model for fluid dynamics in torque converter).

dang 9mo ago

Can someone suggest a better (i.e. more accurate and neutral) title?

bwoah 9mo ago
Mapping out How Fluid Mechanical Spin-coupling Interactions Depend on Proximity, Confinement, and Flow State Alternate: New Ways to Understand, Control, and Exploit Hydrodynamic Spin-spin Interactions in Applications The article doesn't really deliver on either headline, but that's the fault of the article, not the study.
- dang 9mo ago
  The limit is 80 chars and I'm not sure how to squeeze those in. I've taken a crack at something simpler in the title above. Does it work?
gnabgib 9mo ago
From the original source: Scientists Put Teeth Into Water-Driven Gears https://www.nyu.edu/about/news-publications/news/2026/january/scientists-put-teeth-into-water-driven-gears.html https://www.nyu.edu/about/news-publications/news/2026/januar... (Can't tell what the submission title was, but the byline (with quotes) works too: “Fluid gears” invention offers promise for improving mechanical devices)
- dang 9mo ago
  Ok, let's try the second one. Thanks!

hammock 9mo ago

But these things exist though. https://en.wikipedia.org/wiki/Fluid_coupling https://en.wikipedia.org/wiki/Fluid_coupling