this post was submitted on 16 Jun 2023
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Didn't realise that windmill blades are serrated (lemmy.world)
submitted 1 year ago by Finnbot@lemmy.world to c/ukcasual@lemmy.world
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Took the weans a walk away up the back of The Three Towns in Ayrshire where they are installing these big bad boys.

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[–] Trail@kbin.social 2 points 1 year ago (2 children)

So why don't my CPU/case fans have serrated edges as well? Because they are too small?

[–] GreyShack@lemmy.world 4 points 1 year ago (1 children)

Because they are too small?

Could be. As is said so often: physics doesn't scale. Trailing edge eddies may not be the major source of the noise in this anyway - since these are pushing air not being pushed by it.

[–] Trail@kbin.social 3 points 1 year ago

Yeah that makes sense I guess.