alt.sci.physics

Dear SB:

"SB" wrote in message
news:TN6dnUttjNS6L1fanZ2dnUVZ_g-dnZ2d@...
> I see. Is there any documented proof that heat is produced
> from cavitation.

Heat is produced by even turning a propellor.

> I have been reading of 4000K . Does cavitation
> create heat?

Yes. It is a point source, that disappears very quickly.

> And has anyone done this mechanically via rotors.

Yes, that is where it got its name, from cavitating propellors
creating a vacuum, dissolved gasses coming out of solution to
form bubbles, then the bubbles collapse.

> I read of some work done in the early 90's but there
> seems to be little information recently.

Not terribly interesting, no "new physics", just things to
document. Some chemical applications, but inherently less
efficient than other processes.

> I wonder what would happen if a cavitation (rotor
> assembly or via sound frequency) and electrolysis
> where combined.

Google
electrolysis sonoluminescence
1,760 hits.

David A. Smith