After reading through some of the S.Meyer documents published here I beleive that there is an clearly missed statement;
the WFC is a resonant cavity.
What did S.Meyer mean?
I suspect that it is acoustically resonant ... the cavity needs to operate at multiple (1,2,3.....) half wavelengths
if 2 or more then a high pressure node will be present in the bulk of the water, if 1 then only at the cavity walls.
(the effect may be related to sonoluminescence)
If this is true then two systems need to have the same resonant frequency, the acoustic cavity and the electrical L.C circuit.
The chances of hitting this situation by chance are small, which may explain lack of success.
There is a similar situation with Tesla Coil construction where N.Tesla found that
the L.C circuit resonance frequency and the quarter-wavelength frequency should be the same for maximum terminal voltage.
and the primary resonant frequency also needs to be tuned to the secondary frequency.
e.g. speed of sound in water is approximately 1500 m/s
suppose the gap between electrodes is 7.5mm giving a wavelength of 15mm for half-wavelength operation,
so the acoustic resonant frequency would be 1500/0.015 = 100 kHz
ideally the L.C resonance should also be at this frequency
and the electronic pulsing frequency should also be at 100 kHz although if the electronic pulsing is impulsive it will have some energy in harmonics which would work but at much lower efficacy.
So, if my guess is true then the inductance needs to resonate with the cell capacitance at the cell accoustic resonant frequency
and the electronic pulses should be at the same frequency or (less efficiently) at an odd sub-harmonic.
I am not ready to start physical experimentation in this area yet as I am presently suffering severe back problems
(unable to sit/stand for more than a few minutes) and i have several other projects occupying my time
so I am restricted to mental experimentation only.
but maybe this idea may help some of you who are doing physical research.
afterthoughts;
1) the dielectric relaxation time of water is about 15 us so I guess that electrical polarisation times significantly less than this would subject the water molecules to significant stress, implying a desired frequecy much greater than 33 kHz
For this reason, if you measure the capacitance of a WFC below about 100 kHz there will be a significant loss tangent which most LCR meters will struggle with.
requiring a WFC gap even smaller than 7.5mm
2) the inductance of S.Meyer's choke coils seems too large for this mode of operation BUT the WFC capacitance may be resonating with the leakage inductance (see
http://en.wikipedia.org/wiki/Leakage_inductance ) and not the bulk inductance.
Unfortunately it is almost impossible to design the leakage inductance of such transformers
so a very low leakage transformer with some external/additional inductance would be required for scientific/methodical research.
3) to more easily achieve the higher resonant frequencies low capacitance is required, which may be one reason why S.Meyer used multiple series cells
Sorry to add so many interacting variables !