Magnetic flux control idea

[Low-Q]

Hi Vidar,
how is the ferro-fluid orientated inside the wheel?
At the narrow point is it the same volume compressed, at the wide point same volume stretched thin?
Thanks artv

The ferrofluid is not compressable, so it will be filled the complete volume all the time. Since it is a fluid, it will stay oriented as this shape. The steel rods is just "floating" inside and will stirr around in the fluid.
Gaskets around each steel rod prevents fluid to escape.
Steel rods are free to move horizontally. Yellow wheels have separate angled axels (not shown) that is attached to each fixed structure.
So, there is no compression or "stretch" of this fluid.


Vidar

[Low-Q]

Shylo, this image might explain better. You see that the steel rods are submerged in ferrofluid inside between the wheels.
See explanations of principle of operation in the text in the image.


Vidar

[shylo]

Won't the weight of the fluid just make the wheel come to rest with the wide part at the bottom?
artv

[Low-Q]

Won't the weight of the fluid just make the wheel come to rest with the wide part at the bottom?
artv

No. It can't. You see the shafts? Marked as axle 1 and 2 that is.
These shafts are connected separately to each the two wheels. As you turn the wheels around, they will turn around in two different axis that is off axis with respect to eachother, because the shafts are not aligned, but have an angle between them.
So the wide and narrow part will stay where they are even if the wheels are turning. I made a short video showing how they turn. Between the wheels I put the ferrofluid. I do ofcourse need to seal the compartment between the wheels so the fluid doesn't poor out.
https://youtu.be/R7uRDvxw1ks


Vidar

[shylo]

Ok I understand your design, but I don't see why it should rotate.
It will just find balance and sit there.
The wide part stays at ~90deg. and the narrow at~270deg. why should it rotate?
artv