[Public-list] electric repower, steam and diesel smell

[J. Brown]

These links might help with that: 
http://www.rina.org.uk/rfiles/warship/ws_steam_oct02.pdf 
http://www.tfd.chalmers.se/~valeri/Ajax/design.pdf

"It is based on an invention that showed that practical thrust could be 
generated by the injection of steam through a nozzle into water when
assisted by the introduction of air."

"The mixing process starts as a stratified non-equilibrium state, at the 
nozzle exit, but due to interface momentum and energy transfer the steam 
undergoes a condensation process which ultimately results in a 
localised  compressive shock within the flow. The condensation shock 
results in large pressure differences which subsequently lead to 
significant fluid motion. "


Of course we have always used the action/reaction laws and the formula F = 
MA to move stuff by expelling steam (mass) under pressure 
(acceleration)  but I think they are also using Computational Fluid 
Dynamics (needs computers because of it's complex formulas) to harness that 
extra power that can be had from using supersonic shockwaves in the steam. 
Not long ago there wasn't enough computer power on the planet to model a 
simple shockwave in steam but these days CFD is being used to improve the 
performance of many machines including electrical generators (my background).

Not that I understand those formulas, if I did I would be an Engineer not 
an Engineering Technician. LOL

Haefen
Vancouver, BC



At 03:48 PM 6/7/2005 -0400, you wrote:


>I see what they are doing to mix sauces, but I don't see how they are
>extracting the heat energy of steam to create a propulsive force!
>
>Mike

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