Finnbot to UKCasualEnglish • 1 year agoDidn't realise that windmill blades are serratedmessage-square27arrow-up184arrow-down11file-text
arrow-up183arrow-down1message-squareDidn't realise that windmill blades are serratedFinnbot to UKCasualEnglish • 1 year agomessage-square27file-text
Took the weans a walk away up the back of The Three Towns in Ayrshire where they are installing these big bad boys.
minus-squareTraillinkfedilink3•1 year agoSo why don’t my CPU/case fans have serrated edges as well? Because they are too small?
minus-square@GreyShacklink5•1 year ago 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.
minus-square@Siamanguellink4•1 year agoSome do, e.g. Noctua: https://noctua.at/en/vortex-control-notches
So why don’t my CPU/case fans have serrated edges as well? 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.
Yeah that makes sense I guess.
Some do, e.g. Noctua: https://noctua.at/en/vortex-control-notches