Secrets of Advanced FWE

[zono]

Secrets of Advanced FWE

FWE means "Focused Wave Engine", but I found no hints at suppliers sites what focused waves do in this engine?

But I found much literature about "focused shockwaves" and what they can do. They can cause self-ignition in detonatable gas mixtures like hydrogen/air.
Why?
Because shockwaves can be focused in a parabolic reflector similar to sunlight and cause high intensity in the focus. Of course the quality of the reflector is very important for the intensity in the focus.

Why has a normal FWE-head a stub cone? Because this cone focuses the reflected waves and accelerate fast ignition in the burning chamber. The more accurate this cone is, or even better a parabolic shape, the better a FWE should run. There are also "flat-head" pseudo-FEW's which are running, but I think, never with such a chamber pressure like cone-head FWE's. What experience do you have?

I made some simulations to show these effects with Suns 2D-Pressure-Analyzer (good tool!)

viewtopic.php?f=7&t=5910

it's an expansion of a round area (light grey) in ambient pressure (grey) , reflected by a ring outside. One can see the concentration of the reflected and focused waves. The simulation shows also, that the reflected pressure (white) exceeds the start pressure (light grey) !!!

start:

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focused wave reaches center:

whole sequence as movie:

[makulit]

Very cool looking program that, showing the pressures. When you mentioned detonating like hydrogen and oxygen when compressed I thought of diesel fuel and air. If you could get the pressure high enough, it should go just like it was in a diesel engine. Dimethyl ether would be even better (higher cetane rating) and would self pressurize, and if it were desireable, could be used to cool the intake (making the incoming air more dense)