In reply to Blue Straggler:
> (In reply to elsewhere)
>
> We are all assuming that it is all water and there isn't some weird immiscible layering going on...
Answering a couple of points.
The jets aren't angled.
It is water.
After looking up immiscible - I am assuming that there isn't any immiscible layering going on.
I was wondering how long it would be before someone mentioned Bernoulli's principle. It has been suggested to me twice as a reason for the path of the bubbles.
I don't like it as an explanation because it doesn't seem to explain why the bubbles come back intowards the centre a the top.
I'm not convinced bernoulli's principle would have such a strong effect with the turbulent flow in the tank.
Thoughts?