🧵 Energy from Swastika-Shaped Rotors
Anonymous at Sat, 9 Mar 2024 21:51:15 UTC No. 16065563
Here's a neat idea for a new, simpler way of generating energy from ocean waves, using a swastika-rotor. This is illustrated by the Figure.
A swastika-shaped rotor exposed to waves will rotate in the direction its arms are pointing (towards the arm-tips) due to a sheltering effect.
The swastika is centered on a axle (black circle) connected to a dynamo and sits in a random wave field. In the inner square areas (eg: A and B) there are fewer waves because of a sheltering effect, and because fewer wavelengths fit between the solid arms (to exist they need a node at the walls) so there is also a seiche effect. If we take the inner part of the southeast arm there is no net wave impact force on it because there are the same intensity of waves on both sides, but if we look at the outer part of the arm between areas B and C there are waves to the east of it banging into it and pushing it to the west, but no waves to the west of it pushing it east, so the net effect is a force (the arrow) pushing the arms of the swastika clockwise, and generating rotation and electricity with the dynamo.
The next thing is to test it in a wave tank.
https://physicsfromtheedge.blogspot